diff --git a/elasticsearch-statefulSet.yaml b/elasticsearch-statefulSet.yaml
index 189ae59..113aa88 100644
--- a/elasticsearch-statefulSet.yaml
+++ b/elasticsearch-statefulSet.yaml
@@ -40,13 +40,15 @@ spec:
           value: "elasticsearch-0"
         - name: xpack.security.enabled
           value: "true"
+        - name: xpack.security.transport.ssl.enabled
+          value: "true"
         - name: ELASTIC_PASSWORD
           valueFrom:
             secretKeyRef:
               name: elasticsearch-secret
               key: elastic_password
         - name: ES_JAVA_OPTS
-          value: "-Xms2g -Xmx4g"
+          value: "-Xms4g -Xmx4g"
         - name: node.roles
           value: "[master, data_hot]"
         - name: node.attr.data-tier