diff --git a/pkgs/servers/mail/mailman/hyperkitty.nix b/pkgs/servers/mail/mailman/hyperkitty.nix
index fedd6c9f7593..57c1b355bf26 100644
--- a/pkgs/servers/mail/mailman/hyperkitty.nix
+++ b/pkgs/servers/mail/mailman/hyperkitty.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
   '';
 
   meta = {
-    homepage = "http://www.gnu.org/software/mailman/";
+    homepage = "https://www.gnu.org/software/mailman/";
     description = "Archiver for GNU Mailman v3";
     license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux;