diff --git a/.gitmodules b/.gitmodules
index e561a15b..fc4bd926 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "gnulib"]
         path = gnulib
-        url = git://git.savannah.gnu.org/gnulib.git
+        url = https://git.savannah.gnu.org/git/gnulib
 [submodule "bootstrap"]
         path = gl-mod/bootstrap
         url = https://github.com/gnulib-modules/bootstrap.git