diff --git a/CHANGES.md b/CHANGES.md
index f90b70dd..dd6f52d1 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -16,7 +16,7 @@ Notable changes between versions.
 
 #### Addons
 
-* Update Prometheus from v2.17.1 to v2.17.2
+* Update Prometheus from v2.17.1 to v2.18.0-rc.1
 * Update Grafana from v6.7.2 to v7.0.0-beta1
 
 ## v1.18.2
diff --git a/addons/prometheus/deployment.yaml b/addons/prometheus/deployment.yaml
index 6f008437..6537b078 100644
--- a/addons/prometheus/deployment.yaml
+++ b/addons/prometheus/deployment.yaml
@@ -20,7 +20,7 @@ spec:
       serviceAccountName: prometheus
       containers:
         - name: prometheus
-          image: quay.io/prometheus/prometheus:v2.17.2
+          image: quay.io/prometheus/prometheus:v2.18.0-rc.1
           args:
             - --web.listen-address=0.0.0.0:9090
             - --config.file=/etc/prometheus/prometheus.yaml