diff --git a/CHANGES.md b/CHANGES.md
index 68ead150..1f49041a 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -22,7 +22,7 @@ Notable changes between versions.
 
 #### Addons
 
-* Update Prometheus from v2.2.1 to v2.3.0
+* Update Prometheus from v2.2.1 to v2.3.1
 * Add Prometheus liveness and readiness probes
 * Annotate Grafana service so Prometheus scrapes metrics
 * Label namespaces to ease writing Network Policies
diff --git a/addons/prometheus/deployment.yaml b/addons/prometheus/deployment.yaml
index f4c737c6..58b77ee1 100644
--- a/addons/prometheus/deployment.yaml
+++ b/addons/prometheus/deployment.yaml
@@ -18,7 +18,7 @@ spec:
       serviceAccountName: prometheus
       containers:
         - name: prometheus
-          image: quay.io/prometheus/prometheus:v2.3.0
+          image: quay.io/prometheus/prometheus:v2.3.1
           args:
             - --web.listen-address=0.0.0.0:9090
             - --config.file=/etc/prometheus/prometheus.yaml