diff --git a/pkgs/applications/science/math/gap/default.nix b/pkgs/applications/science/math/gap/default.nix
index 0b69c00710c3..079051cc34d4 100644
--- a/pkgs/applications/science/math/gap/default.nix
+++ b/pkgs/applications/science/math/gap/default.nix
@@ -180,6 +180,6 @@ stdenv.mkDerivation rec {
     # reasonable and that way the binary cache doesn't get overloaded.
     hydraPlatforms = lib.optionals (!keepAllPackages) meta.platforms;
     license = licenses.gpl2;
-    homepage = "http://gap-system.org/";
+    homepage = "https://www.gap-system.org";
   };
 }