diff --git a/stdlib/mmap.pyi b/stdlib/mmap.pyi
index 5be7f7b76ba1..f94e876237d1 100644
--- a/stdlib/mmap.pyi
+++ b/stdlib/mmap.pyi
@@ -34,9 +34,22 @@ class mmap:
     if sys.platform == "win32":
         def __init__(self, fileno: int, length: int, tagname: str | None = ..., access: int = ..., offset: int = ...) -> None: ...
     else:
-        def __init__(
-            self, fileno: int, length: int, flags: int = ..., prot: int = ..., access: int = ..., offset: int = ...
-        ) -> None: ...
+        if sys.version_info >= (3, 13):
+            def __init__(
+                self,
+                fileno: int,
+                length: int,
+                flags: int = ...,
+                prot: int = ...,
+                access: int = ...,
+                offset: int = ...,
+                *,
+                trackfd: bool = True,
+            ) -> None: ...
+        else:
+            def __init__(
+                self, fileno: int, length: int, flags: int = ..., prot: int = ..., access: int = ..., offset: int = ...
+            ) -> None: ...
 
     def close(self) -> None: ...
     def flush(self, offset: int = ..., size: int = ...) -> None: ...