diff --git a/extension-testcontainer/pom.xml b/extension-testcontainer/pom.xml
index 4309cf471..71e8833b6 100644
--- a/extension-testcontainer/pom.xml
+++ b/extension-testcontainer/pom.xml
@@ -77,11 +77,6 @@
       <artifactId>zeebe-process-test-filters</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>org.junit.platform</groupId>
-      <artifactId>junit-platform-commons</artifactId>
-    </dependency>
-
     <dependency>
       <groupId>io.grpc</groupId>
       <artifactId>grpc-api</artifactId>
diff --git a/extension-testcontainer/src/main/java/io/camunda/zeebe/process/test/extension/testcontainer/ZeebeProcessTestExtension.java b/extension-testcontainer/src/main/java/io/camunda/zeebe/process/test/extension/testcontainer/ZeebeProcessTestExtension.java
index 2145bbf7c..e8180fea7 100644
--- a/extension-testcontainer/src/main/java/io/camunda/zeebe/process/test/extension/testcontainer/ZeebeProcessTestExtension.java
+++ b/extension-testcontainer/src/main/java/io/camunda/zeebe/process/test/extension/testcontainer/ZeebeProcessTestExtension.java
@@ -30,7 +30,6 @@
 import org.junit.jupiter.api.extension.BeforeEachCallback;
 import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.api.extension.TestWatcher;
-import org.junit.platform.commons.util.ReflectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -148,7 +147,7 @@ private Optional<Field> getField(final Class<?> requiredTestClass, final Class<?
                   + "found %s. Please make sure at most one field of type %s has been declared in the"
                   + " test class.",
               clazz.getSimpleName(), fields.size(), clazz.getSimpleName()));
-    } else if (fields.size() == 0) {
+    } else if (fields.isEmpty()) {
       final Class<?> superclass = requiredTestClass.getSuperclass();
       return superclass == null ? Optional.empty() : getField(superclass, clazz);
     } else {
@@ -159,7 +158,7 @@ private Optional<Field> getField(final Class<?> requiredTestClass, final Class<?
   private void injectField(
       final ExtensionContext extensionContext, final Field field, final Object object) {
     try {
-      ReflectionUtils.makeAccessible(field);
+      field.setAccessible(true);
       field.set(extensionContext.getRequiredTestInstance(), object);
     } catch (final IllegalAccessException e) {
       throw new RuntimeException(e);
@@ -190,7 +189,7 @@ private ObjectMapper getObjectMapper(final ExtensionContext context) {
     }
 
     final Field customMapper = customMapperOpt.get();
-    ReflectionUtils.makeAccessible(customMapper);
+    customMapper.setAccessible(true);
     try {
       return (ObjectMapper) customMapper.get(context.getRequiredTestInstance());
     } catch (final IllegalAccessException e) {
diff --git a/extension/src/main/java/io/camunda/zeebe/process/test/extension/ZeebeProcessTestExtension.java b/extension/src/main/java/io/camunda/zeebe/process/test/extension/ZeebeProcessTestExtension.java
index e8703fb35..3a647427d 100644
--- a/extension/src/main/java/io/camunda/zeebe/process/test/extension/ZeebeProcessTestExtension.java
+++ b/extension/src/main/java/io/camunda/zeebe/process/test/extension/ZeebeProcessTestExtension.java
@@ -22,7 +22,6 @@
 import org.junit.jupiter.api.extension.BeforeEachCallback;
 import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.api.extension.TestWatcher;
-import org.junit.platform.commons.util.ReflectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -123,18 +122,18 @@ private Optional<Field> getField(final Class<?> requiredTestClass, final Class<?
                   + "found %s. Please make sure at most one field of type %s has been declared in the"
                   + " test class.",
               clazz.getSimpleName(), fields.size(), clazz.getSimpleName()));
-    } else if (fields.size() == 0) {
+    } else if (fields.isEmpty()) {
       final Class<?> superclass = requiredTestClass.getSuperclass();
       return superclass == null ? Optional.empty() : getField(superclass, clazz);
     } else {
-      return Optional.of(fields.get(0));
+      return Optional.of(fields.getFirst());
     }
   }
 
   private void injectField(
       final ExtensionContext extensionContext, final Field field, final Object object) {
     try {
-      ReflectionUtils.makeAccessible(field);
+      field.setAccessible(true);
       field.set(extensionContext.getRequiredTestInstance(), object);
     } catch (final IllegalAccessException e) {
       throw new RuntimeException(e);
@@ -159,7 +158,7 @@ private ObjectMapper getObjectMapper(final ExtensionContext context) {
     }
 
     final var customMapper = customMapperOpt.get();
-    ReflectionUtils.makeAccessible(customMapper);
+    customMapper.setAccessible(true);
     try {
       return (ObjectMapper) customMapper.get(context.getRequiredTestInstance());
     } catch (final IllegalAccessException e) {