diff --git a/AUTHORS b/AUTHORS
index e5ce94e1..877e9f7f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -45,7 +45,4 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with GNU Libtool; see the file COPYING.  If not, a copy
-can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
diff --git a/HACKING b/HACKING
index 8eea9f7d..6f24c51d 100644
--- a/HACKING
+++ b/HACKING
@@ -360,10 +360,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with GNU Libtool; see the file COPYING.  If not, a copy
-can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 
 
 
@@ -394,10 +391,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with <program name>; see the file COPYING.  If not, a copy
-can be downloaded from http://www.gnu.org/licenses/gpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+along with <program name>.  If not, see <https://www.gnu.org/licenses/>.
 
 
 
@@ -433,10 +427,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with <program name>; see the file COPYING.  If not, a copy
-can be downloaded from http://www.gnu.org/licenses/gpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+along with <program name>.  If not, see <https://www.gnu.org/licenses/>.
 
 
 
@@ -469,10 +460,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 
 -- 
   Copyright (C) 2004-2008, 2010-2019, 2021-2024 Free Software
diff --git a/Makefile.am b/Makefile.am
index 993a6e84..b7664cd3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -16,10 +16,7 @@
 ## GNU General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License
-## along with GNU Libtool; see the file COPYING.  If not, a copy
-## can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-## or obtained by writing to the Free Software Foundation, Inc.,
-## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+## along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 #####
 
 ACLOCAL_AMFLAGS		= -I m4
diff --git a/bootstrap.conf b/bootstrap.conf
index 85ac3ee1..20b2834a 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 
 
 ## -------------------------------- ##
diff --git a/build-aux/edit-readme-alpha b/build-aux/edit-readme-alpha
index 4f0922d0..6ff7562c 100755
--- a/build-aux/edit-readme-alpha
+++ b/build-aux/edit-readme-alpha
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # We used to maintain separate (but extremely similar!) README and
diff --git a/build-aux/no-bogus-m4-defines b/build-aux/no-bogus-m4-defines
index 11b24f8a..9bbaa1d0 100755
--- a/build-aux/no-bogus-m4-defines
+++ b/build-aux/no-bogus-m4-defines
@@ -22,10 +22,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 
 # Please report bugs or propose patches to bug-libtool@gnu.org.
 
diff --git a/cfg.mk b/cfg.mk
index 5f5db53b..0e50a4c0 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downlodad from http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Boston, # MA 02111-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 
 update-copyright-env := UPDATE_COPYRIGHT_FORCE=1 UPDATE_COPYRIGHT_USE_INTERVALS=1
 
diff --git a/configure.ac b/configure.ac
index 9aef55d3..c6da4285 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/libltdl/configure.ac b/libltdl/configure.ac
index 8f737363..c38e7e9f 100644
--- a/libltdl/configure.ac
+++ b/libltdl/configure.ac
@@ -23,10 +23,7 @@
 # GNU Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU LesserGeneral Public
-# License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-# copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # This configure.ac is not used at all by the libtool bootstrap, but
diff --git a/libltdl/libltdl/lt__alloc.h b/libltdl/libltdl/lt__alloc.h
index 610dc047..9da751f9 100644
--- a/libltdl/libltdl/lt__alloc.h
+++ b/libltdl/libltdl/lt__alloc.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__ALLOC_H
diff --git a/libltdl/libltdl/lt__argz_.h b/libltdl/libltdl/lt__argz_.h
index 02a82ddb..141ed605 100644
--- a/libltdl/libltdl/lt__argz_.h
+++ b/libltdl/libltdl/lt__argz_.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__ARGZ_H
diff --git a/libltdl/libltdl/lt__dirent.h b/libltdl/libltdl/lt__dirent.h
index 60115893..9b1a1f4c 100644
--- a/libltdl/libltdl/lt__dirent.h
+++ b/libltdl/libltdl/lt__dirent.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__DIRENT_H
diff --git a/libltdl/libltdl/lt__glibc.h b/libltdl/libltdl/lt__glibc.h
index d446516a..b03ae574 100644
--- a/libltdl/libltdl/lt__glibc.h
+++ b/libltdl/libltdl/lt__glibc.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__GLIBC_H
diff --git a/libltdl/libltdl/lt__private.h b/libltdl/libltdl/lt__private.h
index a5bad88c..e696f30b 100644
--- a/libltdl/libltdl/lt__private.h
+++ b/libltdl/libltdl/lt__private.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy con be downloaded from http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__PRIVATE_H
diff --git a/libltdl/libltdl/lt__strl.h b/libltdl/libltdl/lt__strl.h
index 8f74b16b..6b7c4ec4 100644
--- a/libltdl/libltdl/lt__strl.h
+++ b/libltdl/libltdl/lt__strl.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT__STRL_H
diff --git a/libltdl/libltdl/lt_dlloader.h b/libltdl/libltdl/lt_dlloader.h
index d5d8f702..6ada1ec0 100644
--- a/libltdl/libltdl/lt_dlloader.h
+++ b/libltdl/libltdl/lt_dlloader.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT_DLLOADER_H
diff --git a/libltdl/libltdl/lt_error.h b/libltdl/libltdl/lt_error.h
index 90e19ee5..4a44d6cc 100644
--- a/libltdl/libltdl/lt_error.h
+++ b/libltdl/libltdl/lt_error.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 /* Only include this header file once. */
diff --git a/libltdl/libltdl/lt_system.h b/libltdl/libltdl/lt_system.h
index d96a160b..1e8fb412 100644
--- a/libltdl/libltdl/lt_system.h
+++ b/libltdl/libltdl/lt_system.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if !defined LT_SYSTEM_H
diff --git a/libltdl/libltdl/slist.h b/libltdl/libltdl/slist.h
index a1768434..9326f55e 100644
--- a/libltdl/libltdl/slist.h
+++ b/libltdl/libltdl/slist.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 /* A generalised list.  This is deliberately transparent so that you
diff --git a/libltdl/loaders/dld_link.c b/libltdl/loaders/dld_link.c
index 3a9f345e..13e5c639 100644
--- a/libltdl/loaders/dld_link.c
+++ b/libltdl/loaders/dld_link.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/dlopen.c b/libltdl/loaders/dlopen.c
index 66a129c9..a7398872 100644
--- a/libltdl/loaders/dlopen.c
+++ b/libltdl/loaders/dlopen.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/dyld.c b/libltdl/loaders/dyld.c
index 3889b6aa..8832f189 100644
--- a/libltdl/loaders/dyld.c
+++ b/libltdl/loaders/dyld.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/load_add_on.c b/libltdl/loaders/load_add_on.c
index 97b4fcb6..1a7f8d31 100644
--- a/libltdl/loaders/load_add_on.c
+++ b/libltdl/loaders/load_add_on.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/loadlibrary.c b/libltdl/loaders/loadlibrary.c
index 13fd2fb9..88ba80e6 100644
--- a/libltdl/loaders/loadlibrary.c
+++ b/libltdl/loaders/loadlibrary.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/preopen.c b/libltdl/loaders/preopen.c
index f1ed0aa3..506346a5 100644
--- a/libltdl/loaders/preopen.c
+++ b/libltdl/loaders/preopen.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/loaders/shl_load.c b/libltdl/loaders/shl_load.c
index af6adcef..59449c29 100644
--- a/libltdl/loaders/shl_load.c
+++ b/libltdl/loaders/shl_load.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/lt__alloc.c b/libltdl/lt__alloc.c
index c70c1996..6063f727 100644
--- a/libltdl/lt__alloc.c
+++ b/libltdl/lt__alloc.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/lt__argz.c b/libltdl/lt__argz.c
index ba6c6922..34a5d3e9 100644
--- a/libltdl/lt__argz.c
+++ b/libltdl/lt__argz.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #if defined LTDL && defined LT_CONFIG_H
diff --git a/libltdl/lt__dirent.c b/libltdl/lt__dirent.c
index ef275e6e..06921460 100644
--- a/libltdl/lt__dirent.c
+++ b/libltdl/lt__dirent.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/lt__strl.c b/libltdl/lt__strl.c
index c53a6718..50506ff2 100644
--- a/libltdl/lt__strl.c
+++ b/libltdl/lt__strl.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/libltdl/lt_dlloader.c b/libltdl/lt_dlloader.c
index befad46e..fa62cba0 100644
--- a/libltdl/lt_dlloader.c
+++ b/libltdl/lt_dlloader.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/lt_error.c b/libltdl/lt_error.c
index d2c92ba3..f3d37bdb 100644
--- a/libltdl/lt_error.c
+++ b/libltdl/lt_error.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/ltdl.c b/libltdl/ltdl.c
index c34ce325..8e553cda 100644
--- a/libltdl/ltdl.c
+++ b/libltdl/ltdl.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "lt__private.h"
diff --git a/libltdl/ltdl.h b/libltdl/ltdl.h
index ec0fd70c..a1679d4a 100644
--- a/libltdl/ltdl.h
+++ b/libltdl/ltdl.h
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 /* Only include this header file once. */
diff --git a/libltdl/ltdl.mk b/libltdl/ltdl.mk
index bebbfefd..1b7b8a38 100644
--- a/libltdl/ltdl.mk
+++ b/libltdl/ltdl.mk
@@ -23,10 +23,7 @@
 ## GNU Lesser General Public License for more details.
 ##
 ## You should have received a copy of the GNU LesserGeneral Public
-## License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-## copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
-## or obtained by writing to the Free Software Foundation, Inc.,
-## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+## License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 #####
 
 ## DO NOT REMOVE THIS LINE -- make depends on it
diff --git a/libltdl/slist.c b/libltdl/slist.c
index 3696394e..a8d08996 100644
--- a/libltdl/slist.c
+++ b/libltdl/slist.c
@@ -23,10 +23,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
-License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
-copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
-or obtained by writing to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+License along with GNU Libltdl.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/tests/am-subdir.at b/tests/am-subdir.at
index 3a9ef634..d3276e82 100644
--- a/tests/am-subdir.at
+++ b/tests/am-subdir.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/archive-in-archive.at b/tests/archive-in-archive.at
index 288888f3..826e7c84 100644
--- a/tests/archive-in-archive.at
+++ b/tests/archive-in-archive.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/bindir.at b/tests/bindir.at
index 8c91aacc..6144e7db 100644
--- a/tests/bindir.at
+++ b/tests/bindir.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 ####
diff --git a/tests/bug_62343.at b/tests/bug_62343.at
index 6aab18f5..1f793ccd 100644
--- a/tests/bug_62343.at
+++ b/tests/bug_62343.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Testing bug 62343:])
diff --git a/tests/cdemo.at b/tests/cdemo.at
index ca80383a..dedef0f5 100644
--- a/tests/cdemo.at
+++ b/tests/cdemo.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/cmdline_wrap.at b/tests/cmdline_wrap.at
index df7eb5a4..a822f8fd 100644
--- a/tests/cmdline_wrap.at
+++ b/tests/cmdline_wrap.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Make sure libtool works when it needs to wrap command lines.
diff --git a/tests/configure-funcs.at b/tests/configure-funcs.at
index ae973fba..e56245ea 100644
--- a/tests/configure-funcs.at
+++ b/tests/configure-funcs.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Functions shared with configure and libtool.])
diff --git a/tests/configure-iface.at b/tests/configure-iface.at
index 4fd71df7..f7b5357e 100644
--- a/tests/configure-iface.at
+++ b/tests/configure-iface.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([configure interface to libltdl.])
diff --git a/tests/convenience.at b/tests/convenience.at
index bf45cdda..9fbfef1f 100644
--- a/tests/convenience.at
+++ b/tests/convenience.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Test that convenience archives work.
diff --git a/tests/ctor.at b/tests/ctor.at
index a9c2d007..0baa887d 100644
--- a/tests/ctor.at
+++ b/tests/ctor.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Constructors.])
diff --git a/tests/cwrapper.at b/tests/cwrapper.at
index c1d9c18a..72414b7b 100644
--- a/tests/cwrapper.at
+++ b/tests/cwrapper.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([cwrapper for uninstalled executables])
diff --git a/tests/darwin.at b/tests/darwin.at
index 5e6e22d6..9a7a7205 100644
--- a/tests/darwin.at
+++ b/tests/darwin.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Mac OS X tests])
diff --git a/tests/demo.at b/tests/demo.at
index feb71dcd..3e309170 100644
--- a/tests/demo.at
+++ b/tests/demo.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/depdemo.at b/tests/depdemo.at
index 6a7e184d..b6531d71 100644
--- a/tests/depdemo.at
+++ b/tests/depdemo.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/deplib-in-subdir.at b/tests/deplib-in-subdir.at
index cc8ef465..d7097127 100644
--- a/tests/deplib-in-subdir.at
+++ b/tests/deplib-in-subdir.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # It should be possible to use a nontrivial relative path to the output
diff --git a/tests/deplibs-ident.at b/tests/deplibs-ident.at
index 01662e35..f95e7225 100644
--- a/tests/deplibs-ident.at
+++ b/tests/deplibs-ident.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Detecting identical deplibs.])
diff --git a/tests/deplibs-mingw.at b/tests/deplibs-mingw.at
index 72a17626..e747ab90 100644
--- a/tests/deplibs-mingw.at
+++ b/tests/deplibs-mingw.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Check that deplibs are detected correctly even if there is no 'file'
diff --git a/tests/destdir.at b/tests/destdir.at
index 38093218..f109f149 100644
--- a/tests/destdir.at
+++ b/tests/destdir.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([DESTDIR tests])
diff --git a/tests/dlloader-api.at b/tests/dlloader-api.at
index 13147fa8..67c3ae5d 100644
--- a/tests/dlloader-api.at
+++ b/tests/dlloader-api.at
@@ -14,10 +14,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([dlloader API])
diff --git a/tests/dumpbin-symbols.at b/tests/dumpbin-symbols.at
index cc288753..4e85b341 100644
--- a/tests/dumpbin-symbols.at
+++ b/tests/dumpbin-symbols.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Windows tests.])
diff --git a/tests/duplicate_conv.at b/tests/duplicate_conv.at
index 10cf9391..70bdf565 100644
--- a/tests/duplicate_conv.at
+++ b/tests/duplicate_conv.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([duplicate convenience archive names])
diff --git a/tests/duplicate_deps.at b/tests/duplicate_deps.at
index 1e987528..5b0e0c48 100644
--- a/tests/duplicate_deps.at
+++ b/tests/duplicate_deps.at
@@ -17,10 +17,7 @@ $
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([preserve duplicate convenience deps])
diff --git a/tests/duplicate_members.at b/tests/duplicate_members.at
index 206aadf5..9476e5bd 100755
--- a/tests/duplicate_members.at
+++ b/tests/duplicate_members.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([duplicate members in archive tests])
diff --git a/tests/early-libtool.at b/tests/early-libtool.at
index 3bbe5a9b..6e8395ab 100644
--- a/tests/early-libtool.at
+++ b/tests/early-libtool.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([libtool script generation.])
diff --git a/tests/exceptions.at b/tests/exceptions.at
index b18dd875..a6f467cb 100644
--- a/tests/exceptions.at
+++ b/tests/exceptions.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([C++ exception handling])
diff --git a/tests/execute-mode.at b/tests/execute-mode.at
index 571b7974..ac77c40b 100644
--- a/tests/execute-mode.at
+++ b/tests/execute-mode.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([execute mode])
diff --git a/tests/exeext.at b/tests/exeext.at
index 8c519541..f2fc7f2c 100644
--- a/tests/exeext.at
+++ b/tests/exeext.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/export-def.at b/tests/export-def.at
index 1007c88f..1702eb50 100755
--- a/tests/export-def.at
+++ b/tests/export-def.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([export from a DLL with a .def file])
diff --git a/tests/export.at b/tests/export.at
index feda7f77..b1c3e2ac 100644
--- a/tests/export.at
+++ b/tests/export.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([Export test])
diff --git a/tests/f77demo.at b/tests/f77demo.at
index bd2084a2..6b96920a 100644
--- a/tests/f77demo.at
+++ b/tests/f77demo.at
@@ -18,10 +18,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/fail.at b/tests/fail.at
index 2972c74b..28509d22 100644
--- a/tests/fail.at
+++ b/tests/fail.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # TODO: many possible failure cases missing.  (But how to simulate a full disk?)
diff --git a/tests/fcdemo.at b/tests/fcdemo.at
index 6f708b3c..80fe2482 100644
--- a/tests/fcdemo.at
+++ b/tests/fcdemo.at
@@ -18,10 +18,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/flags.at b/tests/flags.at
index c0663c41..c45d92dd 100644
--- a/tests/flags.at
+++ b/tests/flags.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 m4_foreach([lt_tag], [CC, CXX, F77, FC, GCJ],
diff --git a/tests/help.at b/tests/help.at
index 482ebbca..4e60414e 100644
--- a/tests/help.at
+++ b/tests/help.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Testing libtool functions.])
diff --git a/tests/indirect_deps.at b/tests/indirect_deps.at
index cc220020..571d97ad 100644
--- a/tests/indirect_deps.at
+++ b/tests/indirect_deps.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([indirect convenience])
diff --git a/tests/infer-tag.at b/tests/infer-tag.at
index 8b4daec1..5f843cfc 100644
--- a/tests/infer-tag.at
+++ b/tests/infer-tag.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Check that func_infer_tag works.
diff --git a/tests/inherited_flags.at b/tests/inherited_flags.at
index ca432be4..3bf437a4 100644
--- a/tests/inherited_flags.at
+++ b/tests/inherited_flags.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/install.at b/tests/install.at
index 023aa1ef..c9fe0523 100644
--- a/tests/install.at
+++ b/tests/install.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([Install tests])
diff --git a/tests/lalib-syntax.at b/tests/lalib-syntax.at
index 582b040c..4154a21a 100644
--- a/tests/lalib-syntax.at
+++ b/tests/lalib-syntax.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([syntax of .la files])
diff --git a/tests/libtool.at b/tests/libtool.at
index 9e69c80c..b41c3cde 100755
--- a/tests/libtool.at
+++ b/tests/libtool.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Basic libtool operation.])
diff --git a/tests/libtoolize.at b/tests/libtoolize.at
index 1030b15b..1b562295 100644
--- a/tests/libtoolize.at
+++ b/tests/libtoolize.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/link-order.at b/tests/link-order.at
index c4c02385..12aba57c 100644
--- a/tests/link-order.at
+++ b/tests/link-order.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/link-order2.at b/tests/link-order2.at
index d55bb61f..af22af3e 100644
--- a/tests/link-order2.at
+++ b/tests/link-order2.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # link-order2.test: make sure that depdepls are added right after
diff --git a/tests/loadlibrary.at b/tests/loadlibrary.at
index 24ed03ba..30413924 100644
--- a/tests/loadlibrary.at
+++ b/tests/loadlibrary.at
@@ -14,10 +14,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([loadlibrary error messages])
diff --git a/tests/localization.at b/tests/localization.at
index 544ab911..884f5f4e 100644
--- a/tests/localization.at
+++ b/tests/localization.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([localized compiler messages])
diff --git a/tests/lt_dladvise.at b/tests/lt_dladvise.at
index e3a0596a..4be6ad38 100644
--- a/tests/lt_dladvise.at
+++ b/tests/lt_dladvise.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Try to keep the new interfaces of HEAD separate from those of
diff --git a/tests/lt_dlexit.at b/tests/lt_dlexit.at
index 72ff6b83..f2b4e2f7 100644
--- a/tests/lt_dlexit.at
+++ b/tests/lt_dlexit.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Try to keep the new interfaces of HEAD separate from those of
diff --git a/tests/lt_dlopen.at b/tests/lt_dlopen.at
index cfe65360..e14231e3 100644
--- a/tests/lt_dlopen.at
+++ b/tests/lt_dlopen.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([lt_dlopen error messages])
diff --git a/tests/lt_dlopen_a.at b/tests/lt_dlopen_a.at
index 6997ba2b..4ff330cf 100644
--- a/tests/lt_dlopen_a.at
+++ b/tests/lt_dlopen_a.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([lt_dlopen archive])
diff --git a/tests/lt_dlopenext.at b/tests/lt_dlopenext.at
index 820be8a0..ae483094 100644
--- a/tests/lt_dlopenext.at
+++ b/tests/lt_dlopenext.at
@@ -14,10 +14,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([lt_dlopenext error messages])
diff --git a/tests/ltdl-api.at b/tests/ltdl-api.at
index d252b04f..67ec2cb0 100644
--- a/tests/ltdl-api.at
+++ b/tests/ltdl-api.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([ltdl API])
diff --git a/tests/ltdl-libdir.at b/tests/ltdl-libdir.at
index ca133730..162c2a4c 100644
--- a/tests/ltdl-libdir.at
+++ b/tests/ltdl-libdir.at
@@ -14,10 +14,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([libdir of installed modules])
diff --git a/tests/mdemo.at b/tests/mdemo.at
index 7dfd0cd2..ae21523d 100644
--- a/tests/mdemo.at
+++ b/tests/mdemo.at
@@ -19,10 +19,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/need_lib_prefix.at b/tests/need_lib_prefix.at
index db3e1cca..831b427e 100644
--- a/tests/need_lib_prefix.at
+++ b/tests/need_lib_prefix.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([enforced lib prefix])
diff --git a/tests/no-executables.at b/tests/no-executables.at
index 7530fe36..c4ea851e 100644
--- a/tests/no-executables.at
+++ b/tests/no-executables.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Libtool usage in GCC])
diff --git a/tests/nocase.at b/tests/nocase.at
index 088dd0b4..d315f86e 100644
--- a/tests/nocase.at
+++ b/tests/nocase.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/nonrecursive.at b/tests/nonrecursive.at
index 89b4d879..aa933cee 100644
--- a/tests/nonrecursive.at
+++ b/tests/nonrecursive.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/old-m4-iface.at b/tests/old-m4-iface.at
index ef3963e9..76ca328e 100644
--- a/tests/old-m4-iface.at
+++ b/tests/old-m4-iface.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/pic_flag.at b/tests/pic_flag.at
index 6d27a167..c514b3ed 100644
--- a/tests/pic_flag.at
+++ b/tests/pic_flag.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([override pic_flag at configure time])
diff --git a/tests/recursive.at b/tests/recursive.at
index 062d64bb..282a0d29 100644
--- a/tests/recursive.at
+++ b/tests/recursive.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Recursive Automake Libltdl.])
diff --git a/tests/resident.at b/tests/resident.at
index a7ce1add..c7f4917c 100644
--- a/tests/resident.at
+++ b/tests/resident.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Ensure resident modules are not unloaded at program exit:
diff --git a/tests/runpath-in-lalib.at b/tests/runpath-in-lalib.at
index b6aa4d60..5cae1c93 100644
--- a/tests/runpath-in-lalib.at
+++ b/tests/runpath-in-lalib.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([Runpath in libtool library files])
diff --git a/tests/search-path.at b/tests/search-path.at
index 087146d4..5f3b80a7 100644
--- a/tests/search-path.at
+++ b/tests/search-path.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([sys_lib_search_path])
diff --git a/tests/shlibpath.at b/tests/shlibpath.at
index 47c69494..047881b5 100644
--- a/tests/shlibpath.at
+++ b/tests/shlibpath.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([shlibpath_overrides_runpath])
diff --git a/tests/slist.at b/tests/slist.at
index adecfa94..bce6dbc0 100644
--- a/tests/slist.at
+++ b/tests/slist.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([SList functionality])
diff --git a/tests/standalone.at b/tests/standalone.at
index 9b350e7c..c3d2f00d 100644
--- a/tests/standalone.at
+++ b/tests/standalone.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Standalone Libltdl.])
diff --git a/tests/static.at b/tests/static.at
index 69043a57..57eb5492 100644
--- a/tests/static.at
+++ b/tests/static.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 ##### NOTES #####
diff --git a/tests/stresstest.at b/tests/stresstest.at
index 6fa7fbbc..3dc4717f 100644
--- a/tests/stresstest.at
+++ b/tests/stresstest.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 # Test various flag and option combinations.
diff --git a/tests/subproject.at b/tests/subproject.at
index 45e9b8ff..740897ea 100644
--- a/tests/subproject.at
+++ b/tests/subproject.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([Subproject Libltdl.])
diff --git a/tests/sysroot.at b/tests/sysroot.at
index cf97873f..4a86febc 100644
--- a/tests/sysroot.at
+++ b/tests/sysroot.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 m4_define([SYSROOT_TEST], [
diff --git a/tests/tagdemo.at b/tests/tagdemo.at
index 4f0055a5..404ca5e8 100644
--- a/tests/tagdemo.at
+++ b/tests/tagdemo.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 
diff --git a/tests/template.at b/tests/template.at
index 209b15d9..38c44c72 100644
--- a/tests/template.at
+++ b/tests/template.at
@@ -17,10 +17,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_BANNER([C++ template tests.])
diff --git a/tests/testsuite.at b/tests/testsuite.at
index 093cf03c..5817c85c 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -16,10 +16,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 m4_divert_push([PREPARE_TESTS])dnl
diff --git a/tests/versioning.at b/tests/versioning.at
index cd6356e4..1ab8f001 100644
--- a/tests/versioning.at
+++ b/tests/versioning.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([versioning])
diff --git a/tests/with-pic.at b/tests/with-pic.at
index e63d8421..67b8c694 100644
--- a/tests/with-pic.at
+++ b/tests/with-pic.at
@@ -15,10 +15,7 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from  http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# along with GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
 ####
 
 AT_SETUP([test --with-pic])