diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index f30ee9d48..ab7b7ad3e 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -802,9 +802,9 @@ if sys.version_info >= (3, 6):
     # See https://github.com/python/typeshed/pull/991#issuecomment-288160993
     class _PathLike(Generic[AnyStr]):
         def __fspath__(self) -> AnyStr: ...
-    def compile(source: Any, filename: Union[str, bytes, _PathLike], mode: str, flags: int = ..., dont_inherit: int = ...) -> CodeType: ...
+    def compile(source: Any, filename: Union[str, bytes, _PathLike], mode: str, flags: int = ..., dont_inherit: int = ..., optimize: int = ...) -> CodeType: ...
 else:
-    def compile(source: Any, filename: Union[str, bytes], mode: str, flags: int = ..., dont_inherit: int = ...) -> CodeType: ...
+    def compile(source: Any, filename: Union[str, bytes], mode: str, flags: int = ..., dont_inherit: int = ..., optimize: int = ...) -> CodeType: ...
 def copyright() -> None: ...
 def credits() -> None: ...
 def delattr(o: Any, name: str) -> None: ...