diff --git a/stdlib/2.7/argparse.pyi b/stdlib/2.7/argparse.pyi
index 70d586a5e..452f09401 100644
--- a/stdlib/2.7/argparse.pyi
+++ b/stdlib/2.7/argparse.pyi
@@ -134,7 +134,9 @@ class _ActionsContainer:
         required: bool = ...,
         help: str = ...,
         metavar: str = ...,
-        dest: str = ...) -> None: ...
+        dest: str = ...,
+        version: str = ...,
+    ) -> None: ...
     def add_argument_group(self, *args, **kwargs): ...
     def add_mutually_exclusive_group(self, **kwargs): ...
 
diff --git a/stdlib/3/argparse.pyi b/stdlib/3/argparse.pyi
index e818583a9..9179bdba7 100644
--- a/stdlib/3/argparse.pyi
+++ b/stdlib/3/argparse.pyi
@@ -127,7 +127,8 @@ class _ActionsContainer:
         required: bool = ...,
         help: str = ...,
         metavar: str = ...,
-        dest: str = ...
+        dest: str = ...,
+        version: str = ...,
     ) -> None: ...
     def add_argument_group(self, *args, **kwargs): ...
     def add_mutually_exclusive_group(self, **kwargs): ...