diff --git a/premise/incremental.py b/premise/incremental.py
index be820c77..325064a4 100644
--- a/premise/incremental.py
+++ b/premise/incremental.py
@@ -37,6 +37,7 @@ class IncrementalDatabase(NewDatabase):
     Class for creating an incremental database. Incremental databases allow measuring the
     effects of sectoral updates. The class inherits from the NewDatabase class.
     """
+
     def update(self, sectors: [str, list, None] = None) -> None:
         """
         Update the database with the specified sectors.