Modify access rules

project.config

diff --git a/project.config b/project.config
index 0a484ba..dbf79a0 100644
--- a/project.config
+++ b/project.config
@@ -13,7 +13,7 @@
 	revert = group Registered Users
 [access "refs/for/refs/*"]
 	push = group Registered Users
-	pushMerge = deny group Registered Users
+	pushMerge = block group Registered Users
 [access "refs/heads/*"]
 	create = group Administrators
 	create = group Project Owners