diff --git a/gwenhywfar.spec b/gwenhywfar.spec
index d531e08..653fc40 100644
--- a/gwenhywfar.spec
+++ b/gwenhywfar.spec
@@ -22,6 +22,7 @@
 # Beta does not mean "before release" but a release that is considered as beta:
 %define _version %{version}
 %define _name gwenhywfar
+%define releasenumber 344
 %bcond_with configure
 Name:           gwenhywfar
 Version:        5.4.1
@@ -30,8 +31,7 @@ Summary:        Multiplatform helper library for other libraries
 License:        GPL-2.0-or-later AND LGPL-2.1-or-later
 Group:          System/Libraries
 URL:            https://www.aquamaniac.de/rdm/projects/gwenhywfar
-# The github mirror tarballs are unreliable
-Source:         %{_name}-%{_version}.tar.gz
+Source:         https://www.aquamaniac.de/rdm/attachments/download/%{releasenumber}/%{_name}-%{_version}.tar.gz?
 BuildRequires:  doxygen
 BuildRequires:  fdupes
 # For doc graphs