diff --git a/hutool-cache/src/main/java/cn/hutool/cache/impl/WeakCache.java b/hutool-cache/src/main/java/cn/hutool/cache/impl/WeakCache.java
index 90df20303..4d32b7ed6 100644
--- a/hutool-cache/src/main/java/cn/hutool/cache/impl/WeakCache.java
+++ b/hutool-cache/src/main/java/cn/hutool/cache/impl/WeakCache.java
@@ -1,6 +1,6 @@
 package cn.hutool.cache.impl;
 
-import java.util.WeakHashMap;
+import cn.hutool.core.map.WeakConcurrentMap;
 
 /**
  * 弱引用缓存<br>
@@ -22,6 +22,6 @@ public class WeakCache<K, V> extends TimedCache<K, V>{
 	 * @param timeout 超时时常，单位毫秒，-1或0表示无限制
 	 */
 	public WeakCache(long timeout) {
-		super(timeout, new WeakHashMap<>());
+		super(timeout, new WeakConcurrentMap<>());
 	}
 }
diff --git a/pom.xml b/pom.xml
index e9793eb85..4d394ac24 100644
--- a/pom.xml
+++ b/pom.xml
@@ -97,6 +97,7 @@
 				<configuration>
 					<source>${compile.version}</source>
 					<target>${compile.version}</target>
+					<compilerArgument>-Xlint:unchecked</compilerArgument>
 				</configuration>
 			</plugin>
 			<!-- Javadoc -->