diff --git a/src/main/java/com/palnet/comn/utils/ControlCacheUtils.java b/src/main/java/com/palnet/comn/utils/ControlCacheUtils.java
index f1a229d..cf514ef 100644
--- a/src/main/java/com/palnet/comn/utils/ControlCacheUtils.java
+++ b/src/main/java/com/palnet/comn/utils/ControlCacheUtils.java
@@ -9,11 +9,12 @@ import org.springframework.stereotype.Component;
 import javax.naming.ldap.Control;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 @Component
 public class ControlCacheUtils {
     private Logger logger = LoggerFactory.getLogger(getClass());
-    private static Map<String, ControlCacheModel> controls = new HashMap<>();
+    private static Map<String, ControlCacheModel> controls = new ConcurrentHashMap<>();
     private Integer removeTime = 1000 * 10; // 10초
 
     public static void setControl(String objectId, ControlCacheModel control) {