diff --git a/idl/build.gradle b/idl/build.gradle
index a1152c7..12d33bd 100644
--- a/idl/build.gradle
+++ b/idl/build.gradle
@@ -32,14 +32,14 @@ dependencies {
 protobuf {
     protoc {
         // The artifact spec for the Protobuf Compiler
-        artifact = 'com.google.protobuf:protoc:3.6.1'
+        artifact = 'com.google.protobuf:protoc:3.18.0'
     }
     plugins {
         // Optional: an artifact spec for a protoc plugin, with "grpc" as
         // the identifier, which can be referred to in the "plugins"
         // container of the "generateProtoTasks" closure.
         grpc {
-            artifact = 'io.grpc:protoc-gen-grpc-java:1.15.1'
+            artifact = 'io.grpc:protoc-gen-grpc-java:1.50.0'
         }
     }
     generateProtoTasks {