diff --git a/itstack-demo-netty-2-02/pom.xml b/itstack-demo-netty-2-02/pom.xml
index 8cfbb67..45be106 100644
--- a/itstack-demo-netty-2-02/pom.xml
+++ b/itstack-demo-netty-2-02/pom.xml
@@ -16,7 +16,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.5.0</version>
+            <version>3.25.5</version>
         </dependency>
         <dependency>
             <groupId>com.googlecode.protobuf-java-format</groupId>