diff --git a/build.gradle b/build.gradle
index 47524c1..da50fda 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,13 +3,13 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.11'
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.12'
     }
 }
 
 plugins {
     id 'java'
-    id 'com.google.protobuf' version '0.8.11'
+    id 'com.google.protobuf' version '0.8.12'
 }
 
 group 'org.bdware'
@@ -17,7 +17,7 @@ version '1.0-SNAPSHOT'
 
 sourceCompatibility = JavaVersion.VERSION_1_8
 
-def grpc_java_version = '1.27.0'
+def grpc_java_version = '1.30.2'
 def junit_version = '5.6.0'
 
 tasks.withType(JavaCompile) {
@@ -52,7 +52,7 @@ javadoc {
 
 protobuf {
     protoc {
-        artifact = "com.google.protobuf:protoc:3.11.3"
+        artifact = "com.google.protobuf:protoc:3.11.4"
     }
     plugins {
         grpc {