diff --git a/pytools/tag.py b/pytools/tag.py
index 06de25f74cea9b57bea4679b8f84bbd3321795a8..f355c18f521ec970c90dac775c698e601d62eb88 100644
--- a/pytools/tag.py
+++ b/pytools/tag.py
@@ -132,7 +132,7 @@ TagOrIterableType = Union[Iterable[Tag], Tag, None]
 T_co = TypeVar("T_co", bound="Taggable")
 
 
-class Taggable():
+class Taggable:
     """
     Parent class for objects with a `tags` attribute.