diff --git a/stdlib/argparse.pyi b/stdlib/argparse.pyi
index 759027d3a890..1243b27dc57f 100644
--- a/stdlib/argparse.pyi
+++ b/stdlib/argparse.pyi
@@ -212,7 +212,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
             title: str = ...,
             description: str | None = ...,
             prog: str = ...,
-            parser_class: type[_ArgumentParserT] = ...,
+            parser_class: type[_ArgumentParserT],
             action: type[Action] = ...,
             option_string: str = ...,
             dest: str | None = ...,
@@ -241,7 +241,7 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
             title: str = ...,
             description: str | None = ...,
             prog: str = ...,
-            parser_class: type[_ArgumentParserT] = ...,
+            parser_class: type[_ArgumentParserT],
             action: type[Action] = ...,
             option_string: str = ...,
             dest: str | None = ...,