diff --git a/pom.xml b/pom.xml
index 3ab7ad0..5b0cda4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,7 +56,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>3.3.1</version>
+      <version>3.16.3</version>
     </dependency>
 
     <!-- https://mvnrepository.com/artifact/org.ehcache/sizeof -->