diff --git a/gap-liepring.spec b/gap-liepring.spec
index 7422e4e..e61002c 100644
--- a/gap-liepring.spec
+++ b/gap-liepring.spec
@@ -24,7 +24,7 @@ License:        GPL-2.0
 Group:          Productivity/Scientific/Math
 URL:            http://www.icm.tu-bs.de/~beick/soft/liepring/
 
-Source:         ftp://ftp.gap-system.org/pub/gap/gap4/tar.bz2/packages/liepring-%version.tar.bz2
+Source:         https://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/liepring-%version.tar.bz2
 BuildArch:      noarch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  fdupes