diff --git a/apps/k8s01/dns/dns.yaml b/apps/k8s01/dns/dns.yaml
index a2a7b54d5df71d76afa31740d4183b1db871446a..e752f0cf878b6aab0c72f94a869f3638cf3c64a6 100644
--- a/apps/k8s01/dns/dns.yaml
+++ b/apps/k8s01/dns/dns.yaml
@@ -34,7 +34,7 @@ spec:
           image: docker.io/secns/unbound:latest
           env:
             - name: CACHE_MIN_TTL
-              value: "300"
+              value: "1200"
             - name: PREFETCH
               value: "yes"
           ports: