diff --git a/build.gradle b/build.gradle
index b1a03cb..7fe9933 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,13 +8,13 @@ buildscript {
   }
   dependencies {
     // run with gradle --no-daemon clean jmh
-    classpath "me.champeau.gradle:jmh-gradle-plugin:0.5.0-rc-2"
+    classpath "me.champeau.gradle:jmh-gradle-plugin:0.5.0"
   }
 }
 
 plugins {
   // usage: gradle dependencyUpdates -Drevision=release
-  id "com.github.ben-manes.versions" version "0.24.0"
+  id "com.github.ben-manes.versions" version "0.27.0"
 }
 apply plugin: 'java'
 apply plugin: 'eclipse'
@@ -66,9 +66,9 @@ subprojects {
 		
 	// dependencies that all sub-projects have 
 	dependencies {
-		testCompile 'org.junit.jupiter:junit-jupiter-api:5.5.1'
-    	testRuntime 'org.junit.jupiter:junit-jupiter-engine:5.5.1'
-    	testRuntime 'org.junit.platform:junit-platform-launcher:1.5.1' // needed by eclipse
+		testCompile 'org.junit.jupiter:junit-jupiter-api:5.5.2'
+    	testRuntime 'org.junit.jupiter:junit-jupiter-engine:5.5.2'
+    	testRuntime 'org.junit.platform:junit-platform-launcher:1.5.2' // needed by eclipse
 	}
 	
 	test {
@@ -83,6 +83,6 @@ subprojects {
 	}
 }
 
-wrapper() {
-	gradleVersion = '5.6.2'
+wrapper {
+	gradleVersion = '6.0.1'
 }