--- a/tests/test-obsolete-bounds-checking.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-obsolete-bounds-checking.t	Mon Jun 26 14:34:58 2023 +0200
@@ -17,7 +17,7 @@
   adding a
   $ hg commit -m "Initial commit"
   $ echo a >> a
-  $ hg amend 2>&1 | egrep -v '^(\*\*|  )'
+  $ hg amend 2>&1 | grep -E -v '^(\*\*|  )'
   transaction abort!
   rollback completed
   Traceback (most recent call last):