diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/statefulset.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/deployment.yaml
similarity index 98%
rename from seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/statefulset.yaml
rename to seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/deployment.yaml
index 5d24c38bf..c4d925fc0 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/statefulset.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/growi-system/hackmd/deployment.yaml
@@ -7,7 +7,6 @@ spec:
   selector:
     matchLabels:
       app: hackmd
-  serviceName: "hackmd"
   replicas: 1
   template:
     metadata: