diff --git a/k8s/31_deployment_broker.yaml b/k8s/31_deployment_broker.yaml
index 3b538cf..9485e69 100644
--- a/k8s/31_deployment_broker.yaml
+++ b/k8s/31_deployment_broker.yaml
@@ -17,7 +17,7 @@ spec:
         kubernetes.io/hostname: k3sh0
       containers:
         - name: redis
-          image: docker.io/library/redis:7
+          image: docker.io/library/redis:7@sha256:a5995dfdf108997f8a7c9587f54fad5e94ed5848de5236a6b28119e99efd67e0
           volumeMounts:
             - name: data
               mountPath: /data