--- a/tests/test-dirstate-version-fallback.t	Mon Jun 26 11:15:30 2023 +0100
+++ b/tests/test-dirstate-version-fallback.t	Mon Jun 26 14:34:58 2023 +0200
@@ -22,7 +22,7 @@
 
 Upgrade it to v2
 
-  $ hg debugupgraderepo -q --config format.use-dirstate-v2=1 --run | egrep 'added:|removed:'
+  $ hg debugupgraderepo -q --config format.use-dirstate-v2=1 --run | grep -E 'added:|removed:'
      added: dirstate-v2
   $ hg debugrequires | grep dirstate
   dirstate-v2