diff --git a/crnk-integration-examples/dagger-vertx-example/build.gradle b/crnk-integration-examples/dagger-vertx-example/build.gradle
index 017811f8b..9905af5e8 100644
--- a/crnk-integration-examples/dagger-vertx-example/build.gradle
+++ b/crnk-integration-examples/dagger-vertx-example/build.gradle
@@ -16,9 +16,8 @@ configurations {
 
 buildscript {
     dependencies {
-        classpath "net.ltgt.gradle:gradle-apt-plugin:0.15"
-
-        classpath 'net.sf.proguard:proguard-gradle:6.0.3'
+        classpath "net.ltgt.gradle:gradle-apt-plugin:0.21"
+        classpath 'net.sf.proguard:proguard-gradle:6.2.2'
 	}
 }