Updates
diff --git a/pom.xml b/pom.xml
index 46f6bcc..9233875 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-resolver-ant-tasks.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-resolver-ant-tasks.git</developerConnection>
     <url>https://github.com/apache/maven-resolver-ant-tasks/</url>
-    <tag>maven-resolver-ant-tasks-1.2.1</tag>
+    <tag>HEAD</tag>
   </scm>
   <issueManagement>
     <system>jira</system>
@@ -61,30 +61,15 @@
   </distributionManagement>
 
   <properties>
-    <mavenVersion>3.6.3</mavenVersion>
+    <mavenVersion>3.8.3</mavenVersion>
     <resolverVersion>1.7.2</resolverVersion>
-    <antVersion>1.8.4</antVersion>
+    <antVersion>1.9.15</antVersion>
     <javaVersion>8</javaVersion>
     <maven.site.path>resolver-archives/resolver-ant-tasks-LATEST</maven.site.path>
     <checkstyle.violation.ignore>LineLength,MagicNumber</checkstyle.violation.ignore>
     <project.build.outputTimestamp>2021-05-13T18:07:07Z</project.build.outputTimestamp>
   </properties>
 
-  <dependencyManagement>
-    <dependencies>
-      <dependency>
-        <groupId>org.codehaus.plexus</groupId>
-        <artifactId>plexus-utils</artifactId>
-        <version>3.2.0</version>
-      </dependency>
-      <dependency>
-        <groupId>org.sonatype.plexus</groupId>
-        <artifactId>plexus-cipher</artifactId>
-        <version>1.7</version>
-      </dependency>
-    </dependencies>
-  </dependencyManagement>
-
   <dependencies>
     <dependency>
       <!-- NOTE: The target runtime is actually Ant 1.7+ but for compilation we need some newer APIs -->
@@ -138,7 +123,7 @@
       <!-- This shuts off annoying warnings from slf4j-api -->
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-nop</artifactId>
-      <version>1.7.25</version>
+      <version>1.7.30</version>
       <scope>runtime</scope>
     </dependency>
     <dependency>
@@ -175,12 +160,12 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-interpolation</artifactId>
-      <version>1.25</version>
+      <version>1.26</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.sisu</groupId>
       <artifactId>org.eclipse.sisu.plexus</artifactId>
-      <version>0.3.3</version>
+      <version>0.3.5</version>
       <exclusions>
         <exclusion>
           <groupId>com.google.guava</groupId>