--- a/tests/test-push-race.t	Fri Jun 16 22:57:31 2017 -0700
+++ b/tests/test-push-race.t	Sun May 28 00:12:38 2017 +0200
@@ -111,8 +111,8 @@
 #if unrelated
 
   $ cat >> $HGRCPATH << EOF
-  > [experimental]
-  > checkheads-strict = no
+  > [server]
+  > concurrent-push-mode = check-related
   > EOF
 
 #endif