diff --git a/charts/flagger/README.md b/charts/flagger/README.md
index 6ff665ae..631ed472 100644
--- a/charts/flagger/README.md
+++ b/charts/flagger/README.md
@@ -79,6 +79,7 @@ To install Flagger and Prometheus for **Contour**:
 $ helm upgrade -i flagger flagger/flagger \
     --namespace=projectcontour \
     --set meshProvider=contour \
+    --set ingressClass=contour \
     --set prometheus.install=true
 ```
 
@@ -135,6 +136,8 @@ Parameter | Description | Default
 `tolerations` | List of node taints to tolerate | `[]`
 `istio.kubeconfig.secretName` | The name of the Kubernetes secret containing the Istio shared control plane kubeconfig | None
 `istio.kubeconfig.key` | The name of Kubernetes secret data key that contains the Istio control plane kubeconfig | `kubeconfig`
+`ingressAnnotationsPrefix` | Annotations prefix for NGINX ingresses | None
+`ingressClass` | Ingress class used for annotating HTTPProxy objects, e.g. `contour` | None
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm upgrade`. For example,
 
diff --git a/charts/flagger/templates/deployment.yaml b/charts/flagger/templates/deployment.yaml
index f4934857..9666a15f 100644
--- a/charts/flagger/templates/deployment.yaml
+++ b/charts/flagger/templates/deployment.yaml
@@ -103,6 +103,9 @@ spec:
           {{- if .Values.ingressAnnotationsPrefix }}
           - -ingress-annotations-prefix={{ .Values.ingressAnnotationsPrefix }}
           {{- end }}
+          {{- if .Values.ingressClass }}
+          - -ingress-class={{ .Values.ingressClass }}
+          {{- end }}
           {{- if .Values.eventWebhook }}
           - -event-webhook={{ .Values.eventWebhook }}
           {{- end }}
diff --git a/charts/flagger/values.yaml b/charts/flagger/values.yaml
index 9ff73da0..5b8fa00f 100644
--- a/charts/flagger/values.yaml
+++ b/charts/flagger/values.yaml
@@ -30,6 +30,12 @@ selectorLabels: ""
 configTracking:
   enabled: true
 
+# annotations prefix for NGINX ingresses
+ingressAnnotationsPrefix: ""
+
+# ingress class used for annotating HTTPProxy objects
+ingressClass: ""
+
 # when enabled, it will add a security context for the flagger pod. You may
 # need to disable this if you are running flagger on OpenShift
 securityContext: