diff --git a/backend/session.py b/backend/session.py
index 5fd22d1..8e51ae7 100644
--- a/backend/session.py
+++ b/backend/session.py
@@ -17,9 +17,7 @@ database_url = (
 )
 engine = create_async_engine(
     database_url,
-    pool_size=20,
-    max_overflow=10,
-    pool_timeout=1000
+    pool_timeout=2000
 )
 session_factory = async_sessionmaker(
     engine,
diff --git a/marketplaces/wildberries.py b/marketplaces/wildberries.py
index 2901ea8..ac9d2b3 100644
--- a/marketplaces/wildberries.py
+++ b/marketplaces/wildberries.py
@@ -16,11 +16,13 @@ class WildberriesMarketplaceApi(BaseMarketplaceApi):
         self.marketplace = marketplace
         auth_data = json.loads(marketplace.auth_data)
         token = auth_data.get('token')
+        self.is_valid = True
         try:
             decoded_token = jwt.decode(token, algorithms=["HS256"], options={"verify_signature": False})
         except Exception:
             logging.error(f"Couldn't decode token for {marketplace.id}")
-            return None
+            self.is_valid = False
+            return
         self.limiter_key = str(marketplace.company_id) + str(decoded_token.get('sid'))
 
         self.headers = {
@@ -38,6 +40,9 @@ class WildberriesMarketplaceApi(BaseMarketplaceApi):
     async def update_stocks(self, data: Union[list, dict]):
         if type(data) is not list:
             return
+        if not self.is_valid:
+            logging.warning(f'Skipping marketplace [{self.marketplace.id}] because of invalid token')
+            return
         max_stocks = 1000
         chunks = utils.chunk_list(data, max_stocks)
         limiter = BatchLimiter()