diff --git a/elk/arm/elasticsearch/config/jvm.options b/elk/arm/elasticsearch/config/jvm.options
index e5b64ac..d97fbc9 100644
--- a/elk/arm/elasticsearch/config/jvm.options
+++ b/elk/arm/elasticsearch/config/jvm.options
@@ -19,8 +19,8 @@
 # Xms represents the initial size of total heap space
 # Xmx represents the maximum size of total heap space
 
--Xms512m
--Xmx512m
+-Xms2g
+-Xmx2g
 
 ################################################################
 ## Expert settings
diff --git a/elk/arm/elasticsearch/docker-compose.yml b/elk/arm/elasticsearch/docker-compose.yml
index 01c2458..9aa6b5b 100644
--- a/elk/arm/elasticsearch/docker-compose.yml
+++ b/elk/arm/elasticsearch/docker-compose.yml
@@ -6,4 +6,7 @@ elasticsearch:
   volumes:
     - ./data:/opt/elasticsearch/data
     - ./config:/opt/elasticsearch/config
+  mem_limit: 4g
+  cap_add:
+    - IPC_LOCK
   restart: always