mvn4 aggregator
diff --git a/pom.xml b/pom.xml
index 889e2ca..8935bf6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -62,7 +62,7 @@
   </distributionManagement>
 
   <properties>
-    <mavenVersion>3.2.5</mavenVersion>
+    <mavenVersion>4.0.0-alpha-1-SNAPSHOT</mavenVersion>
     <javaVersion>8</javaVersion>
     <project.build.outputTimestamp>2021-05-05T16:39:01Z</project.build.outputTimestamp>
     <resource.delimiter>@</resource.delimiter>
@@ -113,13 +113,13 @@
     <dependency>
       <groupId>org.apache.maven.shared</groupId>
       <artifactId>maven-artifact-transfer</artifactId>
-      <version>0.13.1</version>
+      <version>2.0.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <!-- org.eclipse.aether.util.artifact.SubArtifact -->
       <groupId>org.apache.maven.resolver</groupId>
       <artifactId>maven-resolver-util</artifactId>
-      <version>1.4.1</version>
+      <version>1.8.0-SNAPSHOT</version>
       <optional>true</optional>
     </dependency>
     <dependency>