diff --git a/build.gradle b/build.gradle
index 5d1dd11..0eaa93d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -324,7 +324,7 @@ test {
 
 protobuf {
 	protoc {
-		artifact = "com.google.protobuf:protoc:3.21.8"
+		artifact = "com.google.protobuf:protoc:3.21.9"
 	}
 	generateProtoTasks {
 		ofSourceSet('test').each { task -> sourceSets.test.java.srcDirs files("${protobuf.generatedFilesBaseDir}/test/java").builtBy(task) }