diff --git a/mercurial/pycompat.py b/mercurial/pycompat.py
index 0ab92dabea6ec7d068fb69acf2ffbdfb6b80ef3b_bWVyY3VyaWFsL3B5Y29tcGF0LnB5..829aa604d71a4bf10fe1637ad597e62e0995bd3d_bWVyY3VyaWFsL3B5Y29tcGF0LnB5 100644
--- a/mercurial/pycompat.py
+++ b/mercurial/pycompat.py
@@ -149,7 +149,7 @@
     return list(map(f, *args))
 
 
-def rangelist(*args):
+def rangelist(*args) -> List[int]:
     return list(range(*args))