diff --git a/pkgs/development/python-modules/clickgen/default.nix b/pkgs/development/python-modules/clickgen/default.nix
index fabd5ac9914f..474f81daad12 100644
--- a/pkgs/development/python-modules/clickgen/default.nix
+++ b/pkgs/development/python-modules/clickgen/default.nix
@@ -13,7 +13,7 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "clickgen";
   version = "2.2.5";
   pyproject = true;
@@ -21,7 +21,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "ful1e5";
     repo = "clickgen";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-yFEkE1VyeHBuebpsumc6CTvv2kpAw7XAWlyUlXibqz0=";
   };
 
@@ -57,4 +57,4 @@ buildPythonPackage rec {
     # ld: unknown option: -zdefs
     broken = stdenv.hostPlatform.isDarwin;
   };
-}
+})