diff --git a/gap-toric.spec b/gap-toric.spec
index e6813d6..ce3d719 100644
--- a/gap-toric.spec
+++ b/gap-toric.spec
@@ -24,7 +24,7 @@ License:        MIT
 Group:          Productivity/Scientific/Math
 URL:            http://www.opensourcemath.org/toric/
 
-Source:         http://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/Toric-%version.tar.bz2
+Source:         https://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/Toric-%version.tar.bz2
 BuildArch:      noarch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  fdupes