diff --git a/pkgs/development/python-modules/versiontag/default.nix b/pkgs/development/python-modules/versiontag/default.nix
index aebf40a40f51..8c4bb49ebaff 100644
--- a/pkgs/development/python-modules/versiontag/default.nix
+++ b/pkgs/development/python-modules/versiontag/default.nix
@@ -11,6 +11,11 @@ buildPythonPackage rec {
     sha256 = "1axv2214ykgv5adajv10v2zy5fr9v77db54rkik6ja29p66zl90n";
   };
 
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "get_version(pypi=True)" '"${version}"'
+  '';
+
   checkInputs = [ git ];
 
   pythonImportsCheck = [ "versiontag" ];