diff --git a/aiobotocore/credentials.py b/aiobotocore/credentials.py
index b88797e6..5e535ac8 100644
--- a/aiobotocore/credentials.py
+++ b/aiobotocore/credentials.py
@@ -438,7 +438,10 @@ async def _create_client(self):
         )
 
 
-class AioAssumeRoleWithWebIdentityCredentialFetcher(AioBaseAssumeRoleCredentialFetcher):
+# black: # fmt: skip (ing) this line triggers internal black error
+class AioAssumeRoleWithWebIdentityCredentialFetcher(
+    AioBaseAssumeRoleCredentialFetcher
+):
     def __init__(
         self,
         client_creator,