diff --git a/pkgs/by-name/ap/apg/package.nix b/pkgs/by-name/ap/apg/package.nix
index 6e9f75e175fe..cff5c824551c 100644
--- a/pkgs/by-name/ap/apg/package.nix
+++ b/pkgs/by-name/ap/apg/package.nix
@@ -7,7 +7,7 @@
 }:
 stdenv.mkDerivation {
   pname = "apg";
-  version = "unstable-2015-01-29";
+  version = "2.3.0b-unstable-2015-01-29";
 
   src = fetchFromGitHub {
     owner = "wilx";