diff --git a/codec/src/test/resources/io/netty/handler/codec/xml/sample-04.xml b/codec/src/test/resources/io/netty/handler/codec/xml/sample-04.xml
index 8a75afccd6b1..22b9d702b31c 100644
--- a/codec/src/test/resources/io/netty/handler/codec/xml/sample-04.xml
+++ b/codec/src/test/resources/io/netty/handler/codec/xml/sample-04.xml
@@ -210,12 +210,6 @@
 
   <dependencies>
     <!-- Testing frameworks and related dependencies -->
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.12</version>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.easymock</groupId>
       <artifactId>easymock</artifactId>
diff --git a/microbench/pom.xml b/microbench/pom.xml
index 18aca81bcaaa..32a26bfb0891 100644
--- a/microbench/pom.xml
+++ b/microbench/pom.xml
@@ -185,16 +185,6 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>compile</scope>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-      <scope>compile</scope>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>compile</scope>
-    </dependency>
     <dependency>
       <groupId>org.openjdk.jmh</groupId>
       <artifactId>jmh-core</artifactId>
diff --git a/pom.xml b/pom.xml
index 512965f98a03..d2d22be09605 100644
--- a/pom.xml
+++ b/pom.xml
@@ -886,18 +886,6 @@
         <version>${junit.version}</version>
         <scope>test</scope>
       </dependency>
-      <dependency>
-        <groupId>org.junit.vintage</groupId>
-        <artifactId>junit-vintage-engine</artifactId>
-        <version>${junit.version}</version>
-        <scope>test</scope>
-      </dependency>
-      <dependency>
-        <groupId>junit</groupId>
-        <artifactId>junit</artifactId>
-        <version>4.13.1</version>
-        <scope>test</scope>
-      </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
         <artifactId>netty-build-common</artifactId>
@@ -1030,16 +1018,6 @@
       <artifactId>junit-jupiter-params</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
       <artifactId>netty-build-common</artifactId>
@@ -1148,6 +1126,12 @@
                   <classQualifiedName>io.netty.util.internal.InternalThreadLocalMap</classQualifiedName>
                   <justification>Ignore cache padding.</justification>
                 </item>
+                <item>
+                  <ignore>true</ignore>
+                  <code>java.method.removed</code>
+                  <old>method java.lang.String io.netty.testsuite.util.TestUtils::testMethodName(org.junit.rules.TestName)</old>
+                  <justification>This should be test-only, and we're removing support for JUnit 4.</justification>
+                </item>
               </differences>
             </revapi.differences>
           </analysisConfiguration>
diff --git a/testsuite-native/pom.xml b/testsuite-native/pom.xml
index 8f4c534ad586..afba034fb3d4 100644
--- a/testsuite-native/pom.xml
+++ b/testsuite-native/pom.xml
@@ -45,14 +45,6 @@
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter-engine</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-    </dependency>
   </dependencies>
   <profiles>
     <profile>
diff --git a/testsuite-shading/pom.xml b/testsuite-shading/pom.xml
index 535552985abc..49d0f00f1c34 100644
--- a/testsuite-shading/pom.xml
+++ b/testsuite-shading/pom.xml
@@ -200,14 +200,6 @@
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter-engine</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-    </dependency>
   </dependencies>
   <profiles>
     <profile>
diff --git a/testsuite/pom.xml b/testsuite/pom.xml
index f6dc457b86cb..6e7813c91037 100644
--- a/testsuite/pom.xml
+++ b/testsuite/pom.xml
@@ -94,16 +94,6 @@
       <artifactId>junit-jupiter-params</artifactId>
       <scope>compile</scope>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-      <scope>compile</scope>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>compile</scope>
-    </dependency>
     <dependency>
       <groupId>org.hamcrest</groupId>
       <artifactId>hamcrest-library</artifactId>
diff --git a/testsuite/src/main/java/io/netty/testsuite/transport/socket/DatagramUnicastIPv6Test.java b/testsuite/src/main/java/io/netty/testsuite/transport/socket/DatagramUnicastIPv6Test.java
index 2235747e91a5..308669c6f5ad 100644
--- a/testsuite/src/main/java/io/netty/testsuite/transport/socket/DatagramUnicastIPv6Test.java
+++ b/testsuite/src/main/java/io/netty/testsuite/transport/socket/DatagramUnicastIPv6Test.java
@@ -18,8 +18,8 @@
 import io.netty.channel.socket.InternetProtocolFamily;
 import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.SuppressJava6Requirement;
-import org.junit.AssumptionViolatedException;
 import org.junit.jupiter.api.BeforeAll;
+import org.opentest4j.TestAbortedException;
 
 import java.io.IOException;
 import java.net.StandardProtocolFamily;
@@ -38,7 +38,7 @@ public static void assumeIpv6Supported() {
             Channel channel = SelectorProvider.provider().openDatagramChannel(StandardProtocolFamily.INET6);
             channel.close();
         } catch (UnsupportedOperationException e) {
-           throw new AssumptionViolatedException("IPv6 not supported", e);
+           throw new TestAbortedException("IPv6 not supported", e);
         } catch (IOException ignore) {
             // Ignore
         }
diff --git a/testsuite/src/main/java/io/netty/testsuite/util/TestUtils.java b/testsuite/src/main/java/io/netty/testsuite/util/TestUtils.java
index eeb37f2f9f53..f1192def7c5e 100644
--- a/testsuite/src/main/java/io/netty/testsuite/util/TestUtils.java
+++ b/testsuite/src/main/java/io/netty/testsuite/util/TestUtils.java
@@ -21,7 +21,6 @@
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;
 import org.junit.jupiter.api.TestInfo;
-import org.junit.rules.TestName;
 import org.tukaani.xz.LZMA2Options;
 import org.tukaani.xz.XZOutputStream;
 
@@ -120,17 +119,6 @@ public String apply(Method method) {
         return testMethodName;
     }
 
-    /**
-     * Returns the method name of the current test.
-     */
-    public static String testMethodName(TestName testName) {
-        String testMethodName = testName.getMethodName();
-        if (testMethodName.contains("[")) {
-            testMethodName = testMethodName.substring(0, testMethodName.indexOf('['));
-        }
-        return testMethodName;
-    }
-
     public static void dump(String filenamePrefix) throws IOException {
 
         ObjectUtil.checkNotNull(filenamePrefix, "filenamePrefix");
diff --git a/transport-native-unix-common-tests/pom.xml b/transport-native-unix-common-tests/pom.xml
index 0f56941dbcc8..5743bdc0f9f3 100644
--- a/transport-native-unix-common-tests/pom.xml
+++ b/transport-native-unix-common-tests/pom.xml
@@ -54,15 +54,5 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>compile</scope>
     </dependency>
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
-      <scope>compile</scope>
-    </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>compile</scope>
-    </dependency>
   </dependencies>
 </project>
diff --git a/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/SocketTest.java b/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/SocketTest.java
index 115ab3539584..c33afc2759b9 100644
--- a/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/SocketTest.java
+++ b/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/SocketTest.java
@@ -17,10 +17,10 @@
 
 import io.netty.channel.unix.Buffer;
 import io.netty.channel.unix.Socket;
-import org.junit.AssumptionViolatedException;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.opentest4j.TestAbortedException;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -127,10 +127,10 @@ public void testRawOpt() throws IOException {
     }
 
     protected int level() {
-        throw new AssumptionViolatedException("Not supported");
+        throw new TestAbortedException("Not supported");
     }
 
     protected int optname() {
-        throw new AssumptionViolatedException("Not supported");
+        throw new TestAbortedException("Not supported");
     }
 }