-Source0: http://ftp.gnome.org/pub/GNOME/sources/gdl/3.18/%{name}-%{version}.tar.xz
-# Source0-md5: 25f2e50969406563b78c8ad4571ef826
+Source0: https://download.gnome.org/sources/gdl/3.40/%{name}-%{version}.tar.xz
+# Source0-md5: 21df1254b49b74a498feb99be57364d0
+URL: https://gitlab.gnome.org/GNOME/gdl