diff --git a/fastapi_users/router/common.py b/fastapi_users/router/common.py
index 7200b9f5..0e37c85f 100644
--- a/fastapi_users/router/common.py
+++ b/fastapi_users/router/common.py
@@ -27,4 +27,3 @@ class ErrorCode(str, Enum):
     UPDATE_USER_INVALID_PASSWORD = "UPDATE_USER_INVALID_PASSWORD"
     ACCESS_TOKEN_ALREADY_EXPIRED = "ACCESS_TOKEN_ALREADY_EXPIRED"
     ACCESS_TOKEN_DECODE_ERROR = "ACCESS_TOKEN_DECODE_ERROR"
-
diff --git a/fastapi_users/router/oauth.py b/fastapi_users/router/oauth.py
index a4deb0db..087ecdca 100644
--- a/fastapi_users/router/oauth.py
+++ b/fastapi_users/router/oauth.py
@@ -92,11 +92,15 @@ def get_oauth_router(
                             },
                             ErrorCode.ACCESS_TOKEN_DECODE_ERROR: {
                                 "summary": "Access token is error.",
-                                "value": {"detail": ErrorCode.ACCESS_TOKEN_DECODE_ERROR},
+                                "value": {
+                                    "detail": ErrorCode.ACCESS_TOKEN_DECODE_ERROR
+                                },
                             },
                             ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED: {
                                 "summary": "Access token is already expired.",
-                                "value": {"detail": ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED},
+                                "value": {
+                                    "detail": ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED
+                                },
                             },
                         }
                     }
@@ -239,11 +243,15 @@ def get_oauth_associate_router(
                             },
                             ErrorCode.ACCESS_TOKEN_DECODE_ERROR: {
                                 "summary": "Access token is error.",
-                                "value": {"detail": ErrorCode.ACCESS_TOKEN_DECODE_ERROR},
+                                "value": {
+                                    "detail": ErrorCode.ACCESS_TOKEN_DECODE_ERROR
+                                },
                             },
                             ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED: {
                                 "summary": "Access token is already expired.",
-                                "value": {"detail": ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED},
+                                "value": {
+                                    "detail": ErrorCode.ACCESS_TOKEN_ALREADY_EXPIRED
+                                },
                             },
                         }
                     }
diff --git a/tests/test_router_oauth.py b/tests/test_router_oauth.py
index d5d95bb7..54d80dae 100644
--- a/tests/test_router_oauth.py
+++ b/tests/test_router_oauth.py
@@ -309,7 +309,6 @@ class TestCallback:
         json = response.json()
         assert json["detail"] == ErrorCode.OAUTH_NOT_AVAILABLE_EMAIL
 
-
     async def test_callback_token_expired(
         self,
         async_method_mocker: AsyncMethodMocker,
@@ -361,6 +360,7 @@ class TestCallback:
         assert response.status_code == status.HTTP_400_BAD_REQUEST
         assert user_manager_oauth.on_after_login.called is False
 
+
 @pytest.mark.router
 @pytest.mark.oauth
 @pytest.mark.asyncio
@@ -602,7 +602,7 @@ class TestAssociateCallback:
         assert response.status_code == status.HTTP_400_BAD_REQUEST
         json = response.json()
         assert json["detail"] == ErrorCode.OAUTH_NOT_AVAILABLE_EMAIL
-    
+
     async def test_callback_token_expired(
         self,
         async_method_mocker: AsyncMethodMocker,
@@ -612,10 +612,10 @@ class TestAssociateCallback:
         user_manager_oauth: UserManagerMock,
         access_token: str,
     ):
-        state_jwt = generate_state_token({"sub": str(user_oauth.id)}, "SECRET", lifetime_seconds=-1)
-        async_method_mocker(
-            oauth_client, "get_access_token", return_value=access_token
+        state_jwt = generate_state_token(
+            {"sub": str(user_oauth.id)}, "SECRET", lifetime_seconds=-1
         )
+        async_method_mocker(oauth_client, "get_access_token", return_value=access_token)
         async_method_mocker(
             oauth_client, "get_id_email", return_value=("user_oauth1", user_oauth.email)
         )
@@ -643,9 +643,7 @@ class TestAssociateCallback:
         access_token: str,
     ):
         state_jwt = generate_state_token({"sub": str(user_oauth.id)}, "RANDOM")
-        async_method_mocker(
-            oauth_client, "get_access_token", return_value=access_token
-        )
+        async_method_mocker(oauth_client, "get_access_token", return_value=access_token)
         async_method_mocker(
             oauth_client, "get_id_email", return_value=("user_oauth1", user_oauth.email)
         )
@@ -663,6 +661,7 @@ class TestAssociateCallback:
 
         assert response.status_code == status.HTTP_400_BAD_REQUEST
 
+
 @pytest.mark.asyncio
 @pytest.mark.oauth
 @pytest.mark.router