diff --git a/run b/run
index e1c4fdc10..ed57b2f4a 100755
--- a/run
+++ b/run
@@ -10,7 +10,7 @@ REFRESH_BUILD=1
 
 GAMESERVER_ONLY=1
 
-GS_EXEC="cd $GS_SRC && java -Dnashorn.args=--no-deprecation-warning -jar $BUILD_DIR/server.jar"
+GS_EXEC="cd $GS_SRC && java -Xmx7g -Dnashorn.args=--no-deprecation-warning -jar $BUILD_DIR/server.jar"
 MS_EXEC="cd $MS_SRC && java -Dnashorn.args=--no-deprecation-warning -jar $BUILD_DIR/ms.jar"
 
 # 0: parallel