diff --git a/manual/setup/helm_chart_cluster.md b/manual/setup/helm_chart_cluster.md
index e273583b..7995d90a 100644
--- a/manual/setup/helm_chart_cluster.md
+++ b/manual/setup/helm_chart_cluster.md
@@ -36,6 +36,7 @@ After installation, you need to start the k8s control plane service on each node
     --from-literal=SEAFILE_MYSQL_DB_PASSWORD='<required>' \
     --from-literal=INIT_SEAFILE_ADMIN_PASSWORD='<required>' \
     --from-literal=INIT_SEAFILE_MYSQL_ROOT_PASSWORD='<required>' \
+    --from-literal=REDIS_PASSWORD='' \
     --from-literal=S3_SECRET_KEY='' \
     --from-literal=S3_SSE_C_KEY=''
     ```