diff --git a/Websocket-ChatRoom-master/pom.xml b/Websocket-ChatRoom-master/pom.xml
index c9528f4..5770f82 100644
--- a/Websocket-ChatRoom-master/pom.xml
+++ b/Websocket-ChatRoom-master/pom.xml
@@ -94,7 +94,7 @@
   <dependency>
     <groupId>com.fasterxml.jackson.core</groupId>
     <artifactId>jackson-databind</artifactId>
-    <version>2.8.6</version>
+    <version>2.12.7.1</version>
   </dependency>
   <dependency>
     <groupId>org.codehaus.jackson</groupId>