diff --git a/pom.xml b/pom.xml
index 149ac87..16bec2a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-plugins</artifactId>
-    <version>39</version>
+    <version>40-SNAPSHOT</version>
     <relativePath />
   </parent>
 
@@ -61,7 +61,7 @@
 
   <properties>
     <javaVersion>8</javaVersion>
-    <mavenVersion>3.2.5</mavenVersion>
+    <mavenVersion>4.0.0-alpha-6-SNAPSHOT</mavenVersion>
     <maven.plugin.tools.version>3.8.1</maven.plugin.tools.version>
     <project.build.outputTimestamp>2020-04-07T21:04:00Z</project.build.outputTimestamp>
   </properties>
@@ -129,7 +129,7 @@
     <dependency>
       <groupId>org.apache.maven.plugin-testing</groupId>
       <artifactId>maven-plugin-testing-harness</artifactId>
-      <version>3.3.0</version>
+      <version>3.4.0-SNAPSHOT</version>
       <scope>test</scope>
     </dependency>
   </dependencies>