diff --git a/pkgs/development/python-modules/jh2/default.nix b/pkgs/development/python-modules/jh2/default.nix
index 1016aa8de6aa..95a1eceb2ed9 100644
--- a/pkgs/development/python-modules/jh2/default.nix
+++ b/pkgs/development/python-modules/jh2/default.nix
@@ -9,7 +9,7 @@
   rustPlatform,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "jh2";
   version = "5.0.11";
   pyproject = true;
@@ -17,13 +17,13 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "jawah";
     repo = "h2";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-k69U8O0c7z1TJASOWcndZA/LYTsX7nVfelhaS6FlN5g=";
     fetchSubmodules = true;
   };
 
   cargoDeps = rustPlatform.fetchCargoVendor {
-    inherit pname version src;
+    inherit (finalAttrs) pname version src;
     hash = "sha256-ELZD3CIAv70DGoCgdK8T2yVLtib9ylSvoZPFOge6nIQ=";
   };
 
@@ -44,11 +44,11 @@ buildPythonPackage rec {
   meta = {
     description = "HTTP/2 State-Machine based protocol implementation";
     homepage = "https://github.com/jawah/h2";
-    changelog = "https://github.com/jawah/h2/blob/${src.rev}/CHANGELOG.rst";
+    changelog = "https://github.com/jawah/h2/blob/${finalAttrs.src.rev}/CHANGELOG.rst";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [
       fab
       techknowlogick
     ];
   };
-}
+})