diff --git a/proto/pom.xml b/proto/pom.xml
index c004fea8..3ff063d5 100644
--- a/proto/pom.xml
+++ b/proto/pom.xml
@@ -59,7 +59,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>2.4.0a</version>
+      <version>3.16.1</version>
       <scope>compile</scope>
     </dependency>