diff --git a/charts/argo-cd/README.md b/charts/argo-cd/README.md
index 07b72e20..cebd0923 100644
--- a/charts/argo-cd/README.md
+++ b/charts/argo-cd/README.md
@@ -14,6 +14,10 @@ This chart currently installs the non-HA version of ArgoCD.
 
 ## Upgrading
 
+### 2.10.x to 2.11.0
+
+The application controller is now available as a `StatefulSet` when the `controller.enableStatefulSet` flag is set to true. Depending on your Helm deployment this may be a downtime or breaking change if enabled when using HA and will become the default in 3.x.
+
 ### 1.8.7 to 2.x.x
 
 `controller.extraArgs`, `repoServer.extraArgs` and `server.extraArgs`  are now arrays of strings intead of a map
@@ -93,6 +97,7 @@ Helm v3 has removed the `install-crds` hook so CRDs are now populated by files i
 | controller.clusterAdminAccess.enabled | Enable RBAC for local cluster deployments. | `true` |
 | controller.containerPort | Controller listening port. | `8082` |
 | controller.extraArgs | Additional arguments for the controller. A list of flags | `[]` |
+| controller.enableStatefulSet | Enable deploying the controller as a StatefulSet instead of a Deployment. Used for HA installations. | `false` |
 | controller.env | Environment variables for the controller. | `[]` |
 | controller.image.repository | Repository to use for the controller | `global.image.repository` |
 | controller.image.imagePullPolicy | Image pull policy for the controller | `global.image.imagePullPolicy` |
diff --git a/charts/argo-cd/templates/argocd-application-controller/deployment.yaml b/charts/argo-cd/templates/argocd-application-controller/deployment.yaml
index 4277b171..c2260c78 100755
--- a/charts/argo-cd/templates/argocd-application-controller/deployment.yaml
+++ b/charts/argo-cd/templates/argocd-application-controller/deployment.yaml
@@ -16,7 +16,9 @@ spec:
     matchLabels:
       app.kubernetes.io/name: {{ include "argo-cd.name" . }}-application-controller
       app.kubernetes.io/instance: {{ .Release.Name }}
+  {{- if  .Values.controller.enableStatefulSet }}
   serviceName: {{ template "argo-cd.controller.fullname" . }}
+  {{- end }}
   revisionHistoryLimit: 5
   replicas: {{ .Values.controller.replicas }}
   template: