diff --git a/py-polars/polars/dataframe/frame.py b/py-polars/polars/dataframe/frame.py
index 005c5778abd3e..75c9f35cfdd1b 100644
--- a/py-polars/polars/dataframe/frame.py
+++ b/py-polars/polars/dataframe/frame.py
@@ -4511,7 +4511,7 @@ def limit(self, n: int = 5) -> Self:
         return self.head(n)
 
     def drop_nulls(
-        self, subset: str | Collection[str] | SelectorType | None = None
+        self, subset: str | Collection[str] | SelectorType | Collection[SelectorType] | None = None
     ) -> DataFrame:
         """
         Drop all rows that contain null values.