diff --git a/stdlib/tarfile.pyi b/stdlib/tarfile.pyi
index 24cd81776..a717c280a 100644
--- a/stdlib/tarfile.pyi
+++ b/stdlib/tarfile.pyi
@@ -571,7 +571,7 @@ class TarInfo:
         self,
         *,
         name: str = ...,
-        mtime: int = ...,
+        mtime: float = ...,
         mode: int = ...,
         linkname: str = ...,
         uid: int = ...,