diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -1030,6 +1030,8 @@
 
     def expandpath(self, loc, default=None):
         """Return repository location relative to cwd or from [paths]"""
+        msg = b'ui.expandpath is deprecated, use `get_*` functions from urlutil'
+        self.deprecwarn(msg, b'6.0')
         try:
             p = self.getpath(loc)
             if p: