diff --git a/mypy/dmypy/client.py b/mypy/dmypy/client.py
index 9839f793582d..4791fe337f09 100644
--- a/mypy/dmypy/client.py
+++ b/mypy/dmypy/client.py
@@ -29,8 +29,8 @@
 
 
 class AugmentedHelpFormatter(argparse.RawDescriptionHelpFormatter):
-    def __init__(self, prog: str) -> None:
-        super().__init__(prog=prog, max_help_position=30)
+    def __init__(self, prog: str, **kwargs: Any) -> None:
+        super().__init__(prog=prog, max_help_position=30, **kwargs)
 
 
 parser = argparse.ArgumentParser(
diff --git a/mypy/main.py b/mypy/main.py
index 4d9cec63bbc1..fa48db3d0139 100644
--- a/mypy/main.py
+++ b/mypy/main.py
@@ -249,8 +249,8 @@ def show_messages(
 
 # Make the help output a little less jarring.
 class AugmentedHelpFormatter(argparse.RawDescriptionHelpFormatter):
-    def __init__(self, prog: str) -> None:
-        super().__init__(prog=prog, max_help_position=28)
+    def __init__(self, prog: str, **kwargs: Any) -> None:
+        super().__init__(prog=prog, max_help_position=28, **kwargs)
 
     def _fill_text(self, text: str, width: int, indent: str) -> str:
         if "\n" in text: