diff --git a/pom.xml b/pom.xml
index db7b4f9..15cbb8c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <netty.version>4.1.22.Final</netty.version>
         <akka.version>2.5.3</akka.version>
-        <protobuf.version>3.5.0</protobuf.version>
+        <protobuf.version>3.16.3</protobuf.version>
         <guava.version>24.0-jre</guava.version>
         <gson.version>2.8.2</gson.version>
         <commons-lang3.version>3.6</commons-lang3.version>