diff --git a/src/main/java/com/hbm/handler/ToolAbility.java b/src/main/java/com/hbm/handler/ToolAbility.java
index 4ec1f4035..1ce02283b 100644
--- a/src/main/java/com/hbm/handler/ToolAbility.java
+++ b/src/main/java/com/hbm/handler/ToolAbility.java
@@ -1,6 +1,7 @@
 package com.hbm.handler;
 
 import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;