diff --git a/CloudronManifest.json b/CloudronManifest.json
index 8ec6403..13cddc3 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -8,6 +8,7 @@
   "version": "0.1.0",
   "upstreamVersion": "5.0",
   "minBoxVersion": "7.1.0",
+  "memoryLimit": 1073741824,
   "healthCheckPath": "/",
   "httpPort": 8082,
   "addons": {
diff --git a/start.sh b/start.sh
index 04e3385..05e154f 100755
--- a/start.sh
+++ b/start.sh
@@ -44,5 +44,6 @@ xmlstarlet ed --inplace \
 
 chown -R cloudron /run/traccar /app/data
 
+# https://www.traccar.org/optimization/
 echo "=> Start traccar-server"
-exec gosu cloudron:cloudron /app/code/jre/bin/java -jar tracker-server.jar /app/code/conf/traccar.xml
+exec gosu cloudron:cloudron /app/code/jre/bin/java -Xmx1G -jar tracker-server.jar /app/code/conf/traccar.xml