diff --git a/artifacts/flagger/crd.yaml b/artifacts/flagger/crd.yaml
index 3adf4e07..1a19c283 100644
--- a/artifacts/flagger/crd.yaml
+++ b/artifacts/flagger/crd.yaml
@@ -68,6 +68,9 @@ spec:
             provider:
               description: Traffic managent provider
               type: string
+            metricsServer:
+              description: Prometheus URL
+              type: string
             progressDeadlineSeconds:
               description: Deployment progress deadline
               type: number
diff --git a/charts/flagger/templates/crd.yaml b/charts/flagger/templates/crd.yaml
index e6bc20b9..944386f6 100644
--- a/charts/flagger/templates/crd.yaml
+++ b/charts/flagger/templates/crd.yaml
@@ -69,6 +69,9 @@ spec:
             provider:
               description: Traffic managent provider
               type: string
+            metricsServer:
+              description: Prometheus URL
+              type: string
             progressDeadlineSeconds:
               description: Deployment progress deadline
               type: number
diff --git a/kustomize/base/flagger/crd.yaml b/kustomize/base/flagger/crd.yaml
index 3adf4e07..1a19c283 100644
--- a/kustomize/base/flagger/crd.yaml
+++ b/kustomize/base/flagger/crd.yaml
@@ -68,6 +68,9 @@ spec:
             provider:
               description: Traffic managent provider
               type: string
+            metricsServer:
+              description: Prometheus URL
+              type: string
             progressDeadlineSeconds:
               description: Deployment progress deadline
               type: number
diff --git a/pkg/apis/flagger/v1alpha3/types.go b/pkg/apis/flagger/v1alpha3/types.go
index a8004b2b..adf4296f 100644
--- a/pkg/apis/flagger/v1alpha3/types.go
+++ b/pkg/apis/flagger/v1alpha3/types.go
@@ -51,6 +51,10 @@ type CanarySpec struct {
 	// +optional
 	Provider string `json:"provider,omitempty"`
 
+	// if specified overwrites the -metrics-server flag for this particular canary
+	// +optional
+	MetricsServer string `json:"metricsServer,omitempty"`
+
 	// reference to target resource
 	TargetRef hpav1.CrossVersionObjectReference `json:"targetRef"`