diff --git a/pkgs/development/python-modules/flask-versioned/default.nix b/pkgs/development/python-modules/flask-versioned/default.nix
index 07bb5cbe40b1..aad90cef178b 100644
--- a/pkgs/development/python-modules/flask-versioned/default.nix
+++ b/pkgs/development/python-modules/flask-versioned/default.nix
@@ -7,7 +7,7 @@
 
 buildPythonPackage rec {
   pname = "flask-versioned";
-  version = "0.9.4-20101221";
+  version = "0.9.4";
 
   src = fetchFromGitHub {
     owner = "pilt";