diff --git a/pkgs/development/octave-modules/stk/default.nix b/pkgs/development/octave-modules/stk/default.nix
index 0b161c261c4..192115309fa 100644
--- a/pkgs/development/octave-modules/stk/default.nix
+++ b/pkgs/development/octave-modules/stk/default.nix
@@ -8,7 +8,7 @@ buildOctavePackage rec {
   version = "2.8.0";
 
   src = fetchurl {
-    url = "mirror://sourceforge/octave/${pname}-${version}.tar.gz";
+    url = "https://github.com/stk-kriging/stk/releases/download/${version}/${pname}-${version}-octpkg.tar.gz";
     sha256 = "sha256-dgxpw2L7e9o/zimsLPoqW7dEihrrNsks62XtuXt4zTI=";
   };