diff --git a/examples/java/build.gradle b/examples/java/build.gradle
index 958977e..d8240a5 100644
--- a/examples/java/build.gradle
+++ b/examples/java/build.gradle
@@ -1,5 +1,8 @@
-apply plugin: 'java'
-apply plugin: 'application'
+plugins {
+    id 'java'
+    id 'application'
+    id 'com.github.ben-manes.versions' version '0.21.0'
+}
 
 // ./gradlew
 
diff --git a/examples/java/gradle/wrapper/gradle-wrapper.properties b/examples/java/gradle/wrapper/gradle-wrapper.properties
index ea13fdf..5f1b120 100644
--- a/examples/java/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/java/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/examples/kotlin/build.gradle.kts b/examples/kotlin/build.gradle.kts
index cff424c..83f567a 100644
--- a/examples/kotlin/build.gradle.kts
+++ b/examples/kotlin/build.gradle.kts
@@ -1,7 +1,8 @@
 plugins {
-    kotlin("jvm").version("1.3.21")
+    kotlin("jvm").version("1.3.30")
     application
-    id("org.jetbrains.kotlin.kapt").version("1.3.21")
+    id("org.jetbrains.kotlin.kapt").version("1.3.30")
+    id("com.github.ben-manes.versions").version "0.21.0"
 }
 
 // ./gradlew
diff --git a/examples/kotlin/gradle/wrapper/gradle-wrapper.properties b/examples/kotlin/gradle/wrapper/gradle-wrapper.properties
index ea13fdf..5f1b120 100644
--- a/examples/kotlin/gradle/wrapper/gradle-wrapper.properties
+++ b/examples/kotlin/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ea13fdf..5f1b120 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists