diff --git a/dbt/adapters/bigquery/connections.py b/dbt/adapters/bigquery/connections.py
index b466fee3b..0113457fc 100644
--- a/dbt/adapters/bigquery/connections.py
+++ b/dbt/adapters/bigquery/connections.py
@@ -348,7 +348,6 @@ def get_impersonated_credentials(cls, profile_credentials):
             source_credentials=source_credentials,
             target_principal=profile_credentials.impersonate_service_account,
             target_scopes=list(profile_credentials.scopes),
-            lifetime=(profile_credentials.job_execution_timeout_seconds or 300),
         )
 
     @classmethod