diff --git a/pkgs/tools/misc/cope/default.nix b/pkgs/tools/misc/cope/default.nix
index 326dc7923af..ffa25ba9530 100644
--- a/pkgs/tools/misc/cope/default.nix
+++ b/pkgs/tools/misc/cope/default.nix
@@ -2,7 +2,7 @@
 
 perlPackages.buildPerlPackage rec {
   pname = "cope";
-  version = "unstable-2021-01-29";
+  version = "unstable-2015-01-29";
 
   src = fetchFromGitHub {
     owner = "lotrfan";