diff --git a/pom.xml b/pom.xml
index 89f20b05..4d585817 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@ THE SOFTWARE.
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>4.18</version>
+        <version>4.19</version>
     </parent>
 
     <artifactId>jacoco</artifactId>
@@ -44,8 +44,8 @@ THE SOFTWARE.
         <jacoco.version>0.8.7</jacoco.version>
         <!-- see https://www.jenkins.io/changelog-stable/ for changelog of the LTS releases -->
         <jenkins.version>2.263.4</jenkins.version>
-        <maven.version>3.8.1</maven.version>
-        <powermock.version>2.0.7</powermock.version>
+        <!--  until the plugin-pom picks up a newer version -->
+        <jenkins-test-harness.version>1589.vc23fca066d5c</jenkins-test-harness.version>
         <!-- Do not fail if tests are run without argLine -->
         <argLine />
     </properties>
@@ -113,107 +113,6 @@ THE SOFTWARE.
         </repository>
     </distributionManagement>
 
-    <!-- enforce versions of transitive dependencies to match RequireUpperBoundDeps rule -->
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>commons-io</groupId>
-                <artifactId>commons-io</artifactId>
-                <version>2.8.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.ant</groupId>
-                <artifactId>ant</artifactId>
-                <version>1.10.9</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.commons</groupId>
-                <artifactId>commons-lang3</artifactId>
-                <version>3.12.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.httpcomponents</groupId>
-                <artifactId>httpclient</artifactId>
-                <version>4.5.13</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven</groupId>
-                <artifactId>maven-core</artifactId>
-                <version>${maven.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven</groupId>
-                <artifactId>maven-embedder</artifactId>
-                <version>${maven.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven</groupId>
-                <artifactId>maven-repository-metadata</artifactId>
-                <version>${maven.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven.reporting</groupId>
-                <artifactId>maven-reporting-api</artifactId>
-                <version>3.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven.doxia</groupId>
-                <artifactId>doxia-sink-api</artifactId>
-                <version>1.9.1</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven.doxia</groupId>
-                <artifactId>doxia-site-renderer</artifactId>
-                <version>1.7.4</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven.reporting</groupId>
-                <artifactId>maven-reporting-impl</artifactId>
-                <version>3.0.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven.shared</groupId>
-                <artifactId>maven-shared-utils</artifactId>
-                <version>3.2.1</version>
-            </dependency>
-            <dependency>
-                <groupId>org.codehaus.plexus</groupId>
-                <artifactId>plexus-velocity</artifactId>
-                <version>1.2</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.maven</groupId>
-                <artifactId>maven-aether-provider</artifactId>
-                <version>3.3.9</version>
-            </dependency>
-            <dependency>
-                <groupId>org.codehaus.plexus</groupId>
-                <artifactId>plexus-classworlds</artifactId>
-                <version>2.6.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.codehaus.plexus</groupId>
-                <artifactId>plexus-component-annotations</artifactId>
-                <version>2.1.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.codehaus.plexus</groupId>
-                <artifactId>plexus-container-default</artifactId>
-                <version>1.7.1</version>
-            </dependency>
-            <dependency>
-                <groupId>org.codehaus.plexus</groupId>
-                <artifactId>plexus-interpolation</artifactId>
-                <version>1.24</version>
-            </dependency>
-            <dependency>
-                <groupId>org.jenkins-ci.main</groupId>
-                <artifactId>maven-plugin</artifactId>
-                <version>3.7</version>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
-
     <dependencies>
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>
@@ -235,7 +134,6 @@ THE SOFTWARE.
         <dependency>
             <groupId>org.powermock</groupId>
             <artifactId>powermock-module-junit4</artifactId>
-            <version>${powermock.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -463,7 +361,6 @@ THE SOFTWARE.
                     </execution>
                 </executions>
                 <configuration>
-                    <pluginFirstClassLoader>true</pluginFirstClassLoader>
                     <maskClasses>org.objectweb.asm.</maskClasses>
                 </configuration>
             </plugin>