diff --git a/pkgs/applications/misc/libosmocore/default.nix b/pkgs/applications/misc/libosmocore/default.nix
index 0cab21519cf..a3de388a52a 100644
--- a/pkgs/applications/misc/libosmocore/default.nix
+++ b/pkgs/applications/misc/libosmocore/default.nix
@@ -22,6 +22,10 @@ stdenv.mkDerivation rec {
     hash = "sha256-Dkud3ZA9m/UVbPugbQztUJXFpkQYTWjK2mamxfto9JA=";
   };
 
+  postPatch = ''
+    echo "${version}" > .tarball-version
+  '';
+
   propagatedBuildInputs = [
     talloc
   ];