diff --git a/superset/migrations/versions/6766938c6065_add_key_value_store.py b/superset/migrations/versions/6766938c6065_add_key_value_store.py
index 0a756386aee9..26b1d28e0d49 100644
--- a/superset/migrations/versions/6766938c6065_add_key_value_store.py
+++ b/superset/migrations/versions/6766938c6065_add_key_value_store.py
@@ -38,7 +38,7 @@ def upgrade():
         "key_value",
         sa.Column("id", sa.Integer(), nullable=False),
         sa.Column("resource", sa.String(32), nullable=False),
-        sa.Column("value", sa.LargeBinary(), nullable=False),
+        sa.Column("value", sa.LargeBinary(length=2**31), nullable=False),
         sa.Column("uuid", UUIDType(binary=True), default=uuid4),
         sa.Column("created_on", sa.DateTime(), nullable=True),
         sa.Column("created_by_fk", sa.Integer(), nullable=True),