diff --git a/google/cloud/managed_spark_connect/session.py b/google/cloud/managed_spark_connect/session.py
index 4f76a49..1ac376f 100644
--- a/google/cloud/managed_spark_connect/session.py
+++ b/google/cloud/managed_spark_connect/session.py
@@ -500,7 +500,7 @@ def create_session_pbar():
                 )
 
         def _wait_for_session_available(
-            self, session_name: str, timeout: int = 300
+            self, session_name: str, timeout: int = 600
         ) -> Session:
             start_time = time.time()
             while time.time() - start_time < timeout: