diff --git a/plugins/cloudopt-next-grpc/build.gradle b/plugins/cloudopt-next-grpc/build.gradle
index f2638cd7..c4129fdb 100644
--- a/plugins/cloudopt-next-grpc/build.gradle
+++ b/plugins/cloudopt-next-grpc/build.gradle
@@ -58,7 +58,7 @@ protobuf {
 
 dependencies {
     api project(":cloudopt-next-web")
-    api("com.google.protobuf:protobuf-java:3.6.1")
+    api("com.google.protobuf:protobuf-java:3.16.1")
     api("io.grpc:grpc-stub:${rootProject.property('grpc_version')}")
     api("io.grpc:grpc-protobuf:${rootProject.property('grpc_version')}")
     api("javax.annotation:javax.annotation-api:1.3.1")