diff --git a/examples/kustomize-simple/deployment.yaml b/examples/kustomize-simple/deployment.yaml
index 9e1cc0f..e7e7bc2 100644
--- a/examples/kustomize-simple/deployment.yaml
+++ b/examples/kustomize-simple/deployment.yaml
@@ -24,6 +24,7 @@ spec:
             - name: metrics
               containerPort: 2112
           securityContext:
+            readOnlyRootFilesystem: true
             allowPrivilegeEscalation: false
             capabilities:
               drop: