diff --git a/pmd-ruby/pom.xml b/pmd-ruby/pom.xml
index 642b1347eb..7ed8689213 100644
--- a/pmd-ruby/pom.xml
+++ b/pmd-ruby/pom.xml
@@ -18,8 +18,8 @@
         </dependency>
 
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/pmd-ruby/src/test/java/net/sourceforge/pmd/cpd/RubyTokenizerTest.java b/pmd-ruby/src/test/java/net/sourceforge/pmd/cpd/RubyTokenizerTest.java
index b8722f8d33..48704a2527 100644
--- a/pmd-ruby/src/test/java/net/sourceforge/pmd/cpd/RubyTokenizerTest.java
+++ b/pmd-ruby/src/test/java/net/sourceforge/pmd/cpd/RubyTokenizerTest.java
@@ -6,13 +6,13 @@ package net.sourceforge.pmd.cpd;
 
 import java.util.Properties;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import net.sourceforge.pmd.cpd.test.CpdTextComparisonTest;
 
-public class RubyTokenizerTest extends CpdTextComparisonTest {
+class RubyTokenizerTest extends CpdTextComparisonTest {
 
-    public RubyTokenizerTest() {
+    RubyTokenizerTest() {
         super(".rb");
     }
 
@@ -28,12 +28,12 @@ public class RubyTokenizerTest extends CpdTextComparisonTest {
 
 
     @Test
-    public void testSimple() {
+    void testSimple() {
         doTest("server");
     }
 
     @Test
-    public void testTabWidth() {
+    void testTabWidth() {
         doTest("tabWidth");
     }
 }