diff --git a/fastapi_users/db/ormar.py b/fastapi_users/db/ormar.py
index 8cd02e1a..66f56397 100644
--- a/fastapi_users/db/ormar.py
+++ b/fastapi_users/db/ormar.py
@@ -93,7 +93,7 @@ class OrmarUserDatabase(BaseUserDatabase[UD]):
         self, model: OrmarBaseUserModel, oauth_accounts: List[BaseOAuthAccount]
     ):
         if self.oauth_account_model:
-            oauth_accounts_db: List[ormar.Model] = [
+            oauth_accounts_db = [
                 self.oauth_account_model(user=model, **oacc.dict())
                 for oacc in oauth_accounts
             ]
diff --git a/fastapi_users/db/sqlalchemy.py b/fastapi_users/db/sqlalchemy.py
index 57c9c4ee..fd832436 100644
--- a/fastapi_users/db/sqlalchemy.py
+++ b/fastapi_users/db/sqlalchemy.py
@@ -168,21 +168,23 @@ class SQLAlchemyUserDatabase(BaseUserDatabase[UD]):
             if self.oauth_accounts is None:
                 raise NotSetOAuthAccountTableError()
 
-            query = self.oauth_accounts.delete().where(
+            delete_query = self.oauth_accounts.delete().where(
                 self.oauth_accounts.c.user_id == user.id
             )
-            await self.database.execute(query)
+            await self.database.execute(delete_query)
 
             oauth_accounts_values = []
             oauth_accounts = user_dict.pop("oauth_accounts")
             for oauth_account in oauth_accounts:
                 oauth_accounts_values.append({"user_id": user.id, **oauth_account})
 
-            query = self.oauth_accounts.insert()
-            await self.database.execute_many(query, oauth_accounts_values)
+            insert_query = self.oauth_accounts.insert()
+            await self.database.execute_many(insert_query, oauth_accounts_values)
 
-        query = self.users.update().where(self.users.c.id == user.id).values(user_dict)
-        await self.database.execute(query)
+        update_query = (
+            self.users.update().where(self.users.c.id == user.id).values(user_dict)
+        )
+        await self.database.execute(update_query)
         return user
 
     async def delete(self, user: UD) -> None:
diff --git a/fastapi_users/fastapi_users.py b/fastapi_users/fastapi_users.py
index 382aa365..887545ac 100644
--- a/fastapi_users/fastapi_users.py
+++ b/fastapi_users/fastapi_users.py
@@ -27,7 +27,7 @@ try:
 
     from fastapi_users.router import get_oauth_router
 except ModuleNotFoundError:  # pragma: no cover
-    BaseOAuth2 = Type
+    BaseOAuth2 = Type  # type: ignore
 
 
 class FastAPIUsers:
diff --git a/requirements.dev.txt b/requirements.dev.txt
index e72d0817..02f7f82b 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -24,3 +24,4 @@ httpx-oauth
 httpx
 asgi_lifespan
 uvicorn
+sqlalchemy-stubs
diff --git a/setup.cfg b/setup.cfg
index 253efdba..2de34b2c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,9 +16,21 @@ ignore = D1
 [isort]
 profile = black
 
+[mypy]
+plugins = sqlmypy
+
+[mypy-motor.*]
+ignore_missing_imports = True
+
+[mypy-passlib.*]
+ignore_missing_imports = True
+
+[mypy-pymongo.*]
+ignore_missing_imports = True
+
 [tool:pytest]
 addopts = --ignore=test_build.py
-markers = 
+markers =
 	authentication
 	db
 	fastapi_users