diff --git a/src/test/java/com/ossez/lang/tutorial/tests/LintcodeTest.java b/src/test/java/com/ossez/lang/tutorial/tests/LintcodeTest.java
index 78b5fe7ff3..7aea60afa6 100644
--- a/src/test/java/com/ossez/lang/tutorial/tests/LintcodeTest.java
+++ b/src/test/java/com/ossez/lang/tutorial/tests/LintcodeTest.java
@@ -3,6 +3,7 @@ package com.ossez.lang.tutorial.tests;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;