Modify access rules
diff --git a/project.config b/project.config
index adc070b..fdedfff 100644
--- a/project.config
+++ b/project.config
@@ -20,6 +20,7 @@
 	label-Code-Review = -1..+1 group Registered Users
 	label-Verified = -1..+1 group Diffy Cuckoo
 	label-Verified = -1..+1 group Project Owners
+	submit = group Project Owners
 [access "refs/meta/config"]
 	push = group Project Owners
 	push = group google/gerritcodereview-maintainers@googlegroups.com