diff --git a/math/gap/pkg-descr b/math/gap/pkg-descr
index 17866e837be6..93dbffaecec4 100644
--- a/math/gap/pkg-descr
+++ b/math/gap/pkg-descr
@@ -1,5 +1,5 @@
 GAP (Groups, Algorithms and Programming) is a system for computational
 discrete algebra with particular emphasis on, but not restricted to
 computational group theory.
 
-WWW: http://www.gap-system.org
+WWW: https://www.gap-system.org/