diff --git a/default.nix b/default.nix
index d073ccf..7c56d29 100644
--- a/default.nix
+++ b/default.nix
@@ -5,6 +5,23 @@ in
 self: super: rec {
   python39 = super.python39.override {
     packageOverrides = python-self: python-super: {
+      graphql-core = python-super.buildPythonPackage rec {
+        pname = "graphql-core";
+          version = "3.2.0";
+          format = "setuptools";
+          src = fetchPypi {
+            inherit pname version;
+            sha256 = "sha256-huKgvgCL/eGe94OI3opyWh2UKpGQykMcJKYIN5c4A84=";
+          };
+          checkInputs = [
+            pytest-asyncio
+            pytest-benchmark
+            pytestCheckHook
+          ];
+          pythonImportsCheck = [
+            "graphql"
+          ];
+      };
       strawberry_graphql = python-super.buildPythonPackage rec {
         pname = "strawberry-graphql";
         version = "0.123.0";
@@ -21,23 +38,6 @@ self: super: rec {
           pydantic
           pygments
           poetry
-          # (buildPythonPackage rec {
-          #   pname = "graphql-core";
-          #   version = "3.2.0";
-          #   format = "setuptools";
-          #   src = fetchPypi {
-          #     inherit pname version;
-          #     sha256 = "sha256-huKgvgCL/eGe94OI3opyWh2UKpGQykMcJKYIN5c4A84=";
-          #   };
-          #   checkInputs = [
-          #     pytest-asyncio
-          #     pytest-benchmark
-          #     pytestCheckHook
-          #   ];
-          #   pythonImportsCheck = [
-          #     "graphql"
-          #   ];
-          # })
         ];
         src = python-super.fetchPypi {
           inherit pname version;