diff --git a/stdlib/3/_json.pyi b/stdlib/3/_json.pyi
index 217fadd13..9f7c80176 100644
--- a/stdlib/3/_json.pyi
+++ b/stdlib/3/_json.pyi
@@ -1,6 +1,6 @@
 """Stub file for the '_json' module."""
 
-from typing import Any, Tuple
+from typing import Any, Tuple, Optional, Dict, Callable
 
 class make_encoder:
     sort_keys: Any
@@ -11,9 +11,10 @@ class make_encoder:
     default: Any
     encoder: Any
     item_separator: Any
-    def __init__(self, markers, default, encoder, indent, key_separator,
-                 item_separator, sort_keys, skipkeys, allow_nan) -> None: ...
-    def __call__(self, *args, **kwargs) -> Any: ...
+    def __init__(self, markers: Optional[Dict[int, Any]], default: Callable[[Any], Any], encoder: Callable[[str], str],
+                 indent: Optional[int], key_separator: str, item_separator: str, sort_keys: bool, skipkeys: bool,
+                 allow_nan: bool) -> None: ...
+    def __call__(self, obj: object, _current_indent_level: int) -> Any: ...
 
 class make_scanner:
     object_hook: Any