diff --git a/pom.xml b/pom.xml
index f2ea65eb..4eab8d44 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
-        <protobuf.version>3.16.1</protobuf.version>
+        <protobuf.version>3.16.3</protobuf.version>
         <spring.boot.version>1.3.8.RELEASE</spring.boot.version>
         <gcloud.java.version>0.2.8</gcloud.java.version>
         <gamemaster.version>2.8.0</gamemaster.version>