diff --git a/ChangeLog b/ChangeLog
index f231bba9..746e613a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2005-11-01  Gary V. Vaughan  <gary@gnu.org>
+
+	* libltdl/m4/argz.m4, libltdl/m4/ltoptions.m4, libltdl/ltsugar.m4,
+	libltdl/m4/ltversion.in: Add serial number tags, and bump serial
+	number.
+
 2005-10-31  Kean Johnston  <jkj@sco.com>
 
 	* libltdl/m4/libtool.m4 (LT_CMD_MAX_LEN): Set correctly for SCO.
diff --git a/libltdl/m4/argz.m4 b/libltdl/m4/argz.m4
index 51fe7cdb..a98d2aea 100644
--- a/libltdl/m4/argz.m4
+++ b/libltdl/m4/argz.m4
@@ -7,7 +7,7 @@
 # unlimited permission to copy and/or distribute it, with or without
 # modifications, as long as this notice is preserved.
 
-# serial 2
+# serial 3 argz.m4
 
 AC_DEFUN([gl_FUNC_ARGZ],
 [gl_PREREQ_ARGZ
diff --git a/libltdl/m4/ltoptions.m4 b/libltdl/m4/ltoptions.m4
index 8e81b8b0..ccea7fa8 100644
--- a/libltdl/m4/ltoptions.m4
+++ b/libltdl/m4/ltoptions.m4
@@ -7,7 +7,7 @@
 # unlimited permission to copy and/or distribute it, with or without
 # modifications, as long as this notice is preserved.
 
-# serial 2
+# serial 3 ltoptions.m4
 
 # This is to help aclocal find these macros, as it can't see m4_define.
 AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
diff --git a/libltdl/m4/ltsugar.m4 b/libltdl/m4/ltsugar.m4
index bca66f06..b746ffea 100644
--- a/libltdl/m4/ltsugar.m4
+++ b/libltdl/m4/ltsugar.m4
@@ -7,7 +7,7 @@
 # unlimited permission to copy and/or distribute it, with or without
 # modifications, as long as this notice is preserved.
 
-# serial 2
+# serial 3 ltsugar.m4
 
 # This is to help aclocal find these macros, as it can't see m4_define.
 AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
diff --git a/libltdl/m4/ltversion.in b/libltdl/m4/ltversion.in
index 97de23b0..329151b7 100644
--- a/libltdl/m4/ltversion.in
+++ b/libltdl/m4/ltversion.in
@@ -9,7 +9,7 @@
 
 # @configure_input@
 
-# serial @MACRO_SERIAL@
+# serial @MACRO_SERIAL@ ltversion.m4
 # This file is part of GNU Libtool
 
 m4_define([LT_PACKAGE_VERSION], [@MACRO_VERSION@])