diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 505b292..1b1e38c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,8 +12,11 @@ on:
 
 jobs:
   build:
-
+    name: tests
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v2
diff --git a/codejailservice/tests/test_code_exec_service.py b/codejailservice/tests/test_code_exec_service.py
index dbd1017..de7b9bc 100644
--- a/codejailservice/tests/test_code_exec_service.py
+++ b/codejailservice/tests/test_code_exec_service.py
@@ -150,8 +150,8 @@ def test_unsafe_code_exec_failure(self, import_code_jail_safe_exec):
             data={"payload": json.dumps(payload)},
         )
         self.assertEqual(200, response.status_code)
-        self.assertIn(expected_result.pop("emsg"), response.json["emsg"])
-        self.assertDictContainsSubset(expected_result, response.json)
+        self.assertEqual(expected_result['emsg'], response.json["emsg"])
+        self.assertEqual(expected_result['globals_dict'], response.json["globals_dict"])
 
     @mock.patch("codejailservice.routes.code_exec_service.import_code_jail_safe_exec")
     def test_safe_code_exec_failure(self, import_code_jail_safe_exec):
@@ -190,5 +190,5 @@ def test_safe_code_exec_failure(self, import_code_jail_safe_exec):
             data={"payload": json.dumps(payload)},
         )
         self.assertEqual(200, response.status_code)
-        self.assertIn(expected_result.pop("emsg"), response.json["emsg"])
-        self.assertDictContainsSubset(expected_result, response.json)
+        self.assertEqual(expected_result['emsg'], response.json["emsg"])
+        self.assertEqual(expected_result['globals_dict'], response.json["globals_dict"])