diff --git a/stubs/simplejson/METADATA.toml b/stubs/simplejson/METADATA.toml
index 5a55c100afb8..c6ff42e733e8 100644
--- a/stubs/simplejson/METADATA.toml
+++ b/stubs/simplejson/METADATA.toml
@@ -1,4 +1,4 @@
-version = "3.18.*"
+version = "3.19.*"
 
 [tool.stubtest]
 ignore_missing_stub = true
diff --git a/stubs/simplejson/simplejson/encoder.pyi b/stubs/simplejson/simplejson/encoder.pyi
index 88c3da92c93f..e69a066dfe50 100644
--- a/stubs/simplejson/simplejson/encoder.pyi
+++ b/stubs/simplejson/simplejson/encoder.pyi
@@ -5,6 +5,6 @@ class JSONEncoder:
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
     def encode(self, o: Any) -> str: ...
     def default(self, o: Any) -> NoReturn: ...
-    def iterencode(self, o: Any, _one_shot: bool = False) -> Iterator[str]: ...
+    def iterencode(self, o: Any) -> Iterator[str]: ...
 
 class JSONEncoderForHTML(JSONEncoder): ...