diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -310,6 +310,7 @@ class localrepository:
         # check in files
         new = {}
         linkrev = self.changelog.count()
+        update.sort()
         for f in update:
             self.ui.note(f + "\n")
             try: