diff --git a/gui/build.gradle b/gui/build.gradle
index 72ff5e3c..b3aa4a6d 100644
--- a/gui/build.gradle
+++ b/gui/build.gradle
@@ -63,6 +63,7 @@ startScripts.doFirst {
 private void setDefaultArgs() {
     application.applicationDefaultJvmArgs = ["-Djava.util.logging.config.file=logging.properties",
                                     "-Xms256M",
+                                    "-Xmx4g",
                                     "-XX:+UseParallelGC",
                                     "-XX:+HeapDumpOnOutOfMemoryError",
                                     "-XX:+ExitOnOutOfMemoryError",