diff --git a/pkgs/applications/version-management/git-and-tools/git-reparent/default.nix b/pkgs/applications/version-management/git-and-tools/git-reparent/default.nix
index f2f700b8510..03435ec834a 100644
--- a/pkgs/applications/version-management/git-and-tools/git-reparent/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/git-reparent/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation rec {
   name = "git-reparent-${version}";
-  version = "2017-09-03";
+  version = "unstable-2017-09-03";
 
   src = fetchFromGitHub {
     owner  = "MarkLodato";