diff --git a/gerrit/acls/openstack/releases.config b/gerrit/acls/openstack/releases.config
index 6f9dfe86ad..be03a20139 100644
--- a/gerrit/acls/openstack/releases.config
+++ b/gerrit/acls/openstack/releases.config
@@ -10,7 +10,8 @@ label-Workflow = -1..+1 group releases-core
 [label "PTL-Approved"]
 copyAllScoresOnTrivialRebase = true
 defaultValue = 0
-function = NoOp
+function = AnyWithBlock
+value = -1 Block
 value = 0 Abstain
 value = +1 Approved by PTL