diff --git a/build.gradle b/build.gradle
index bbcc7ea5..950a5fe0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ plugins {
   id "java-library"
   id "maven-publish"
 
-  id "com.google.protobuf" version "0.8.19"
+  id "com.google.protobuf" version "0.9.1"
 }
 
 repositories {