diff --git a/itstack-naive-chat-server/itstack-naive-chat-server-ddd/pom.xml b/itstack-naive-chat-server/itstack-naive-chat-server-ddd/pom.xml
index 42197ed..446ebd3 100644
--- a/itstack-naive-chat-server/itstack-naive-chat-server-ddd/pom.xml
+++ b/itstack-naive-chat-server/itstack-naive-chat-server-ddd/pom.xml
@@ -49,7 +49,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.34</version>
+            <version>8.0.16</version>
         </dependency>
         <!-- test -->
         <dependency>