diff --git a/pom.xml b/pom.xml
index 4c641790..66f430a8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
     <version.zeebe>0.22.0-alpha1</version.zeebe>
 
     <!-- plugin version -->
-    <plugin.version.checkstyle>3.0.0</plugin.version.checkstyle>
+    <plugin.version.checkstyle>3.1.0</plugin.version.checkstyle>
     <plugin.version.enforcer>3.0.0-M2</plugin.version.enforcer>
     <plugin.version.fmt>2.6.0</plugin.version.fmt>
     <plugin.version.license>3.0</plugin.version.license>
@@ -168,7 +168,6 @@
           <sourceDirectories>
             <sourceDirectory>${project.build.sourceDirectory}</sourceDirectory>
             <sourceDirectory>${project.build.testSourceDirectory}</sourceDirectory>
-            <sourceDirectory>${project.basedir}/src/test/jmh</sourceDirectory>
           </sourceDirectories>
         </configuration>
         <executions>
@@ -208,11 +207,6 @@
             </goals>
           </execution>
         </executions>
-        <configuration>
-          <additionalSourceDirectories>
-            <additionalSourceDirectory>${project.basedir}/src/test/jmh</additionalSourceDirectory>
-          </additionalSourceDirectories>
-        </configuration>
       </plugin>
     </plugins>
   </build>
diff --git a/src/main/java/io/zeebe/containers/ZeebeContainer.java b/src/main/java/io/zeebe/containers/ZeebeContainer.java
index c520626b..7aaae5c8 100644
--- a/src/main/java/io/zeebe/containers/ZeebeContainer.java
+++ b/src/main/java/io/zeebe/containers/ZeebeContainer.java
@@ -71,8 +71,8 @@ default SELF withConfiguration(final InputStream configuration) {
       final Path tempFile = Files.createTempFile(getClass().getPackage().getName(), ".tmp");
       long bytesRead;
       long offset = 0;
-      try (final ReadableByteChannel input = Channels.newChannel(configuration);
-          final FileChannel output = FileChannel.open(tempFile)) {
+      try (ReadableByteChannel input = Channels.newChannel(configuration);
+          FileChannel output = FileChannel.open(tempFile)) {
         while ((bytesRead = output.transferFrom(input, offset, 4096L)) > 0) {
           offset += bytesRead;
         }