diff --git a/sqlite_utils/utils.py b/sqlite_utils/utils.py
index 98ceffd..377f82a 100644
--- a/sqlite_utils/utils.py
+++ b/sqlite_utils/utils.py
@@ -335,6 +335,7 @@ class TypeTracker:
         # Outputs {'id': 'integer', 'name': 'text'}
         db["creatures"].transform(types=tracker.types)
     """
+
     def __init__(self):
         self.trackers = {}