diff --git a/protocol/pom.xml b/protocol/pom.xml
index 72d3639..adb5951 100644
--- a/protocol/pom.xml
+++ b/protocol/pom.xml
@@ -15,7 +15,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-buffer</artifactId>
-            <version>4.1.52.Final</version>
+            <version>4.1.85.Final</version>
             <scope>provided</scope>
         </dependency>