diff --git a/stdlib/sys.pyi b/stdlib/sys.pyi
index 372a3364c..e60a58c02 100644
--- a/stdlib/sys.pyi
+++ b/stdlib/sys.pyi
@@ -141,6 +141,7 @@ class _implementation:
     version: _version_info
     hexversion: int
     cache_tag: str
+    _multiarch: str
 
 int_info: _int_info
 
@@ -168,6 +169,7 @@ def exc_info() -> _OptExcInfo: ...
 
 # sys.exit() accepts an optional argument of anything printable
 def exit(__status: object = ...) -> NoReturn: ...
+def getallocatedblocks() -> int: ...
 def getdefaultencoding() -> str: ...
 
 if sys.platform != "win32":
@@ -246,3 +248,7 @@ class _asyncgen_hooks(Tuple[_AsyncgenHook, _AsyncgenHook]):
 
 def get_asyncgen_hooks() -> _asyncgen_hooks: ...
 def set_asyncgen_hooks(firstiter: _AsyncgenHook = ..., finalizer: _AsyncgenHook = ...) -> None: ...
+
+if sys.version_info >= (3, 7):
+    def get_coroutine_origin_tracking_depth() -> int: ...
+    def set_coroutine_origin_tracking_depth(depth: int) -> None: ...