diff --git a/CHANGELOG.md b/CHANGELOG.md
index e54e636d..551381fb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 ### Added
 
 - [#237](https://github.com/thanos-io/kube-thanos/pull/237) Add new bucket replicate component.
+- [#245](https://github.com/thanos-io/kube-thanos/pull/245) Support scraping config reloader sidecar for ruler.
 
 ### Fixed
 
diff --git a/examples/all/manifests/thanos-rule-service.yaml b/examples/all/manifests/thanos-rule-service.yaml
index e631670d..080fe0e3 100644
--- a/examples/all/manifests/thanos-rule-service.yaml
+++ b/examples/all/manifests/thanos-rule-service.yaml
@@ -17,6 +17,9 @@ spec:
   - name: http
     port: 10902
     targetPort: 10902
+  - name: reloader
+    port: 9533
+    targetPort: 9533
   selector:
     app.kubernetes.io/component: rule-evaluation-engine
     app.kubernetes.io/instance: thanos-rule
diff --git a/examples/all/manifests/thanos-rule-serviceMonitor.yaml b/examples/all/manifests/thanos-rule-serviceMonitor.yaml
index 2cc13670..7c70eb5a 100644
--- a/examples/all/manifests/thanos-rule-serviceMonitor.yaml
+++ b/examples/all/manifests/thanos-rule-serviceMonitor.yaml
@@ -17,6 +17,7 @@ spec:
       - namespace
       - pod
       targetLabel: instance
+  - port: reloader
   selector:
     matchLabels:
       app.kubernetes.io/component: rule-evaluation-engine
diff --git a/examples/all/manifests/thanos-rule-statefulSet.yaml b/examples/all/manifests/thanos-rule-statefulSet.yaml
index e4f269da..a6b0d069 100644
--- a/examples/all/manifests/thanos-rule-statefulSet.yaml
+++ b/examples/all/manifests/thanos-rule-statefulSet.yaml
@@ -74,6 +74,8 @@ spec:
           name: grpc
         - containerPort: 10902
           name: http
+        - containerPort: 9533
+          name: reloader
         readinessProbe:
           failureThreshold: 18
           httpGet:
diff --git a/jsonnet/kube-thanos/kube-thanos-rule.libsonnet b/jsonnet/kube-thanos/kube-thanos-rule.libsonnet
index 562274b0..50402844 100644
--- a/jsonnet/kube-thanos/kube-thanos-rule.libsonnet
+++ b/jsonnet/kube-thanos/kube-thanos-rule.libsonnet
@@ -23,6 +23,7 @@ local defaults = {
   ports: {
     grpc: 10901,
     http: 10902,
+    reloader: 9533,
   },
   tracing: {},
 
@@ -249,6 +250,7 @@ function(params) {
             targetLabel: 'instance',
           }],
         },
+        { port: 'reloader' },
       ],
     },
   },