diff --git a/pkgs/tools/system/opencl-info/default.nix b/pkgs/tools/system/opencl-info/default.nix
index 173de5f607f..124b53512d7 100644
--- a/pkgs/tools/system/opencl-info/default.nix
+++ b/pkgs/tools/system/opencl-info/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation {
   pname = "opencl-info";
-  version = "2014-02-21";
+  version = "unstable-2014-02-21";
 
   src = fetchFromGitHub {
     owner = "marchv";