diff --git a/charts/argo-rollouts/templates/_helpers.tpl b/charts/argo-rollouts/templates/_helpers.tpl
index 4c23c54e..820996a8 100644
--- a/charts/argo-rollouts/templates/_helpers.tpl
+++ b/charts/argo-rollouts/templates/_helpers.tpl
@@ -174,6 +174,7 @@ Return the rules for controller's Role and ClusterRole
   - get
   - list
   - watch
+  - update
 # services patch needed to update selector of canary/stable/active/preview services
 # services create needed to create and delete services for experiments
 - apiGroups: