diff --git a/k8s/efk.yaml b/k8s/efk.yaml
index 5bba9c63..3a295551 100644
--- a/k8s/efk.yaml
+++ b/k8s/efk.yaml
@@ -132,6 +132,9 @@ spec:
         resources: {}
         terminationMessagePath: /dev/termination-log
         terminationMessagePolicy: File
+        env:
+        - name: ES_JAVA_OPTS
+          value: "-Xms1g -Xmx1g"
       dnsPolicy: ClusterFirst
       restartPolicy: Always
       schedulerName: default-scheduler