diff --git a/open_notebook/repository.py b/open_notebook/repository.py
index 74f6d45..f6b8f20 100644
--- a/open_notebook/repository.py
+++ b/open_notebook/repository.py
@@ -19,6 +19,7 @@ def db_connection():
         password=os.environ["SURREAL_PASS"],
         namespace=os.environ["SURREAL_NAMESPACE"],
         database=os.environ["SURREAL_DATABASE"],
+        max_size=2.2**20,
         encrypted=False,  # Set to True if using SSL
     )
     try: