diff --git a/pkgs/by-name/cl/clipnotify/package.nix b/pkgs/by-name/cl/clipnotify/package.nix
index bb3cc6b00a38..74bd082e9e40 100644
--- a/pkgs/by-name/cl/clipnotify/package.nix
+++ b/pkgs/by-name/cl/clipnotify/package.nix
@@ -7,7 +7,7 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "clipnotify";
-  version = "unstable-2018-02-20";
+  version = "0-unstable-2018-02-20";
 
   src = fetchFromGitHub {
     owner = "cdown";