Update

build.gradle

@@ -3,22 +3,22 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.8'
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.11'
     }
 }
 
 plugins {
     id 'java'
-    id 'com.google.protobuf' version '0.8.8'
+    id 'com.google.protobuf' version '0.8.11'
 }
 
-group 'org.bdchain'
+group 'org.bdware'
 version '1.0-SNAPSHOT'
 
-sourceCompatibility = 1.8
+sourceCompatibility = JavaVersion.VERSION_1_8
 
-def grpc_java_version = '1.20.0'
-def junit_version = '5.4.1'
+def grpc_java_version = '1.27.0'
+def junit_version = '5.6.0'
 
 tasks.withType(JavaCompile) {
     options.encoding = "UTF-8"
@@ -43,7 +43,7 @@ javadoc {
 
 protobuf {
     protoc {
-        artifact = "com.google.protobuf:protoc:3.7.1"
+        artifact = "com.google.protobuf:protoc:3.11.3"
     }
     plugins {
         grpc {
@@ -68,6 +68,11 @@ dependencies {
     compile 'io.grpc:grpc-netty-shaded:' + grpc_java_version
     compile 'io.grpc:grpc-protobuf:' + grpc_java_version
     compile 'io.grpc:grpc-stub:' + grpc_java_version
+    if (JavaVersion.current().isJava9Compatible()) {
+        // Workaround for @javax.annotation.Generated
+        // see: https://github.com/grpc/grpc-java/issues/3633
+        compile 'javax.annotation:javax.annotation-api:1.3.2'
+    }
     testImplementation 'org.junit.jupiter:junit-jupiter-api:' + junit_version
     testImplementation 'org.junit.jupiter:junit-jupiter-params:' + junit_version
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:' + junit_version