diff --git a/Documentation/user-guides/cluster-monitoring.md b/Documentation/user-guides/cluster-monitoring.md
index 5b8cedf4d..b12f25cfb 100644
--- a/Documentation/user-guides/cluster-monitoring.md
+++ b/Documentation/user-guides/cluster-monitoring.md
@@ -60,8 +60,8 @@ spec:
       - args:
         - --kubelet-service=kube-system/kubelet
         - --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
-        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.20.0
-        image: quay.io/coreos/prometheus-operator:v0.20.0
+        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.21.0
+        image: quay.io/coreos/prometheus-operator:v0.21.0
         name: prometheus-operator
         ports:
         - containerPort: 8080
diff --git a/VERSION b/VERSION
index 5a03fb737..885415662 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.20.0
+0.21.0
diff --git a/contrib/kube-prometheus/jsonnetfile.json b/contrib/kube-prometheus/jsonnetfile.json
index b4ebb0f2d..dc29c8217 100644
--- a/contrib/kube-prometheus/jsonnetfile.json
+++ b/contrib/kube-prometheus/jsonnetfile.json
@@ -9,6 +9,16 @@
                 }
             },
             "version": "."
+        },
+        {
+            "name": "prometheus-operator",
+            "source": {
+                "git": {
+                    "remote": "../../",
+                    "subdir": "jsonnet/prometheus-operator"
+                }
+            },
+            "version": "."
         }
     ]
 }
\ No newline at end of file
diff --git a/contrib/kube-prometheus/manifests/0prometheus-operator-deployment.yaml b/contrib/kube-prometheus/manifests/0prometheus-operator-deployment.yaml
index 3276d198c..df15b9542 100644
--- a/contrib/kube-prometheus/manifests/0prometheus-operator-deployment.yaml
+++ b/contrib/kube-prometheus/manifests/0prometheus-operator-deployment.yaml
@@ -19,8 +19,8 @@ spec:
       - args:
         - --kubelet-service=kube-system/kubelet
         - --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
-        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.20.0
-        image: quay.io/coreos/prometheus-operator:v0.20.0
+        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.21.0
+        image: quay.io/coreos/prometheus-operator:v0.21.0
         name: prometheus-operator
         ports:
         - containerPort: 8080
diff --git a/example/non-rbac/prometheus-operator.yaml b/example/non-rbac/prometheus-operator.yaml
index 2cf4d2622..9cf916ca6 100644
--- a/example/non-rbac/prometheus-operator.yaml
+++ b/example/non-rbac/prometheus-operator.yaml
@@ -19,8 +19,8 @@ spec:
       - args:
         - --kubelet-service=kube-system/kubelet
         - --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
-        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.20.0
-        image: quay.io/coreos/prometheus-operator:v0.20.0
+        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.21.0
+        image: quay.io/coreos/prometheus-operator:v0.21.0
         name: prometheus-operator
         ports:
         - containerPort: 8080
diff --git a/example/rbac/prometheus-operator/prometheus-operator-deployment.yaml b/example/rbac/prometheus-operator/prometheus-operator-deployment.yaml
index 6deb73cee..6a6d20364 100644
--- a/example/rbac/prometheus-operator/prometheus-operator-deployment.yaml
+++ b/example/rbac/prometheus-operator/prometheus-operator-deployment.yaml
@@ -19,8 +19,8 @@ spec:
       - args:
         - --kubelet-service=kube-system/kubelet
         - --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
-        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.20.0
-        image: quay.io/coreos/prometheus-operator:v0.20.0
+        - --prometheus-config-reloader=quay.io/coreos/prometheus-config-reloader:v0.21.0
+        image: quay.io/coreos/prometheus-operator:v0.21.0
         name: prometheus-operator
         ports:
         - containerPort: 8080
diff --git a/jsonnet/prometheus-operator/prometheus-operator.libsonnet b/jsonnet/prometheus-operator/prometheus-operator.libsonnet
index 4456748e1..b11e3f4d1 100644
--- a/jsonnet/prometheus-operator/prometheus-operator.libsonnet
+++ b/jsonnet/prometheus-operator/prometheus-operator.libsonnet
@@ -5,7 +5,7 @@ local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
     namespace: 'default',
 
     versions+:: {
-      prometheusOperator: 'v0.20.0',
+      prometheusOperator: 'v0.21.0',
       configmapReloader: 'v0.0.1',
     },