diff --git a/pkgs/development/python-modules/tag-expressions/default.nix b/pkgs/development/python-modules/tag-expressions/default.nix
index fec5184933ea..19a9999b2fa6 100644
--- a/pkgs/development/python-modules/tag-expressions/default.nix
+++ b/pkgs/development/python-modules/tag-expressions/default.nix
@@ -17,6 +17,11 @@ buildPythonPackage rec {
     hash = "sha256-EbSwfAH+sL3JGW+COfDA2f7cLGyKmQMsbyyDGy13Lkg=";
   };
 
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace-fail 'version=read_version()' 'version="${version}"'
+  '';
+
   build-system = [ setuptools ];
 
   nativeCheckInputs = [ pytestCheckHook ];