diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py
index d8ad05b..bf80f2a 100644
--- a/sqlite_utils/db.py
+++ b/sqlite_utils/db.py
@@ -718,6 +718,7 @@ class Table(Queryable):
 
     def transform(
         self,
+        *,
         columns=None,
         rename=None,
         drop=None,
@@ -754,6 +755,7 @@ class Table(Queryable):
 
     def transform_sql(
         self,
+        *,
         columns=None,
         rename=None,
         drop=None,