diff --git a/com.avaloq.tools.ddk.check.core.test/.classpath b/com.avaloq.tools.ddk.check.core.test/.classpath
index bad5dd7a27..ea3640ba13 100644
--- a/com.avaloq.tools.ddk.check.core.test/.classpath
+++ b/com.avaloq.tools.ddk.check.core.test/.classpath
@@ -3,7 +3,6 @@
   <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
   <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins">
     <accessrules>
-      <accessrule kind="accessible" pattern="org/eclipse/xtext/junit4/ui/util/**"/>
       <accessrule kind="accessible" pattern="org/eclipse/xtext/xbase/imports/RewritableImportSection"/>
       <accessrule kind="accessible" pattern="org/eclipse/xtext/formatting2/**"/>
       <accessrule kind="accessible" pattern="org/eclipse/xtext/preferences/**"/>
diff --git a/com.avaloq.tools.ddk.check.core.test/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.check.core.test/META-INF/MANIFEST.MF
index 0bd941889e..d5412a8e0d 100644
--- a/com.avaloq.tools.ddk.check.core.test/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.check.core.test/META-INF/MANIFEST.MF
@@ -29,7 +29,6 @@ Require-Bundle: com.avaloq.tools.ddk.check.core,
  org.eclipse.xtext.xbase.testing,
  junit-jupiter-api,
  junit-jupiter-engine,
- junit-vintage-engine,
  junit-platform-suite-api
 Export-Package: com.avaloq.tools.ddk.check.core.test,
  com.avaloq.tools.ddk.check.core.test.util,
diff --git a/com.avaloq.tools.ddk.check.test.runtime.tests/.classpath b/com.avaloq.tools.ddk.check.test.runtime.tests/.classpath
index a0c3adab0f..ccaaf2210f 100644
--- a/com.avaloq.tools.ddk.check.test.runtime.tests/.classpath
+++ b/com.avaloq.tools.ddk.check.test.runtime.tests/.classpath
@@ -9,9 +9,6 @@
 	<classpathentry kind="src" path="resource"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins">
-		<accessrules>
-			<accessrule kind="accessible" pattern="org/eclipse/xtext/junit4/ui/util/**"/>
-		</accessrules>
 	</classpathentry>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/com.avaloq.tools.ddk.check.test.runtime.tests/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.check.test.runtime.tests/META-INF/MANIFEST.MF
index 1154b3c5e0..1477542dc0 100644
--- a/com.avaloq.tools.ddk.check.test.runtime.tests/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.check.test.runtime.tests/META-INF/MANIFEST.MF
@@ -19,8 +19,7 @@ Require-Bundle: com.avaloq.tools.ddk.check.runtime.core,
  org.eclipse.xtext.xbase.lib,
  junit-jupiter-api,
  junit-jupiter-engine,
- junit-platform-suite-api,
- junit-vintage-engine
+ junit-platform-suite-api
 Import-Package: org.hamcrest.core
 Bundle-RequiredExecutionEnvironment: JavaSE-21
 Export-Package: com.avaloq.tools.ddk.check.test.runtime,
diff --git a/com.avaloq.tools.ddk.sample.helloworld.ui.test/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.sample.helloworld.ui.test/META-INF/MANIFEST.MF
index c5372c62e6..dc244afce0 100644
--- a/com.avaloq.tools.ddk.sample.helloworld.ui.test/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.sample.helloworld.ui.test/META-INF/MANIFEST.MF
@@ -20,8 +20,7 @@ Require-Bundle: com.avaloq.tools.ddk.sample.helloworld,
  org.eclipse.xtext.xbase.ui.testing,
  junit-jupiter-api,
  junit-jupiter-engine,
- junit-platform-suite-api,
- junit-vintage-engine
+ junit-platform-suite-api
 Bundle-RequiredExecutionEnvironment: JavaSE-21
 Export-Package: com.avaloq.tools.ddk.sample.helloworld.test,
  com.avaloq.tools.ddk.sample.helloworld.ui;x-internal=true
diff --git a/com.avaloq.tools.ddk.test.ui.test/src/com/avaloq/tools/ddk/test/ui/test/AllTests.java b/com.avaloq.tools.ddk.test.ui.test/src/com/avaloq/tools/ddk/test/ui/test/AllTests.java
index 95b9d298b7..b3f79d268b 100644
--- a/com.avaloq.tools.ddk.test.ui.test/src/com/avaloq/tools/ddk/test/ui/test/AllTests.java
+++ b/com.avaloq.tools.ddk.test.ui.test/src/com/avaloq/tools/ddk/test/ui/test/AllTests.java
@@ -18,7 +18,7 @@
 
 
 /**
- * Empty class serving only as holder for JUnit4 annotations.
+ * Empty class serving only as holder for JUnit annotations.
  */
 @Suite
 @SelectClasses({
diff --git a/com.avaloq.tools.ddk.test.ui/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.test.ui/META-INF/MANIFEST.MF
index 9da8b65993..dc4365cafd 100644
--- a/com.avaloq.tools.ddk.test.ui/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.test.ui/META-INF/MANIFEST.MF
@@ -13,7 +13,7 @@ Require-Bundle: com.avaloq.tools.ddk.test.core,
  org.eclipse.swt,
  org.eclipse.swtbot.eclipse.core,
  org.eclipse.swtbot.eclipse.finder;visibility:=reexport,
- org.eclipse.swtbot.junit4_x,
+ org.eclipse.swtbot.junit5_x,
  org.eclipse.swtbot.swt.finder,
  org.eclipse.ui;visibility:=reexport,
  org.hamcrest.library,
diff --git a/com.avaloq.tools.ddk.xtext.export.test/src/com/avaloq/tools/ddk/xtext/test/export/ExportTestSuite.java b/com.avaloq.tools.ddk.xtext.export.test/src/com/avaloq/tools/ddk/xtext/test/export/ExportTestSuite.java
index 6439fdfb32..55dc1eca71 100644
--- a/com.avaloq.tools.ddk.xtext.export.test/src/com/avaloq/tools/ddk/xtext/test/export/ExportTestSuite.java
+++ b/com.avaloq.tools.ddk.xtext.export.test/src/com/avaloq/tools/ddk/xtext/test/export/ExportTestSuite.java
@@ -21,7 +21,7 @@
 
 
 /**
- * Empty class serving only as holder for JUnit4 annotations.
+ * Empty class serving only as holder for JUnit annotations.
  */
 @Suite
 @SelectClasses({ExportFormattingTest.class, ExportValidationTest.class, ExportValidationOkTest.class, ExportScopingTest.class, ExportExportingTest.class})
diff --git a/com.avaloq.tools.ddk.xtext.test/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.xtext.test/META-INF/MANIFEST.MF
index 2c06458a3e..ef98b20242 100644
--- a/com.avaloq.tools.ddk.xtext.test/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.xtext.test/META-INF/MANIFEST.MF
@@ -28,7 +28,6 @@ Require-Bundle: com.avaloq.tools.ddk.xtext,
  org.eclipse.emf.ecore,
  junit-jupiter-api,
  junit-jupiter-engine,
- junit-vintage-engine,
  junit-platform-suite-api,
  org.eclipse.xtext.testing,
  org.opentest4j
diff --git a/com.avaloq.tools.ddk.xtext.test/pom.xml b/com.avaloq.tools.ddk.xtext.test/pom.xml
index b94f0de796..50f58bb3ea 100644
--- a/com.avaloq.tools.ddk.xtext.test/pom.xml
+++ b/com.avaloq.tools.ddk.xtext.test/pom.xml
@@ -17,6 +17,7 @@
         <artifactId>tycho-surefire-plugin</artifactId>
         <version>${tycho.version}</version>
         <configuration>
+          <providerHint>junit5</providerHint>
           <trimStackTrace>false</trimStackTrace>
           <skip>false</skip>
           <testClass>${test.testClass}</testClass>
@@ -49,8 +50,8 @@
                 <versionRange>0.0.0</versionRange>
               </requirement>
               <requirement>
-                <type>eclipse-feature</type>
-                <id>org.eclipse.pde</id>
+                <type>eclipse-plugin</type>
+                <id>org.eclipse.pde.junit.runtime</id>
                 <versionRange>0.0.0</versionRange>
               </requirement>
               <requirement>
diff --git a/com.avaloq.tools.ddk.xtext.test/src/com/avaloq/tools/ddk/xtext/AllTests.java b/com.avaloq.tools.ddk.xtext.test/src/com/avaloq/tools/ddk/xtext/AllTests.java
index c05b8c5869..1043771909 100644
--- a/com.avaloq.tools.ddk.xtext.test/src/com/avaloq/tools/ddk/xtext/AllTests.java
+++ b/com.avaloq.tools.ddk.xtext.test/src/com/avaloq/tools/ddk/xtext/AllTests.java
@@ -29,7 +29,7 @@
 
 
 /**
- * Empty class serving only as holder for JUnit4 annotations.
+ * Empty class serving only as holder for JUnit annotations.
  */
 // CHECKSTYLE:OFF HideUtilityClassConstructor
 
diff --git a/ddk-configuration/launches/devkit-run.launch b/ddk-configuration/launches/devkit-run.launch
index 0229f0ddcc..5f6c29b6bf 100644
--- a/ddk-configuration/launches/devkit-run.launch
+++ b/ddk-configuration/launches/devkit-run.launch
@@ -223,7 +223,7 @@
 <setEntry value="org.eclipse.swtbot.eclipse.ui@default:default"/>
 <setEntry value="org.eclipse.swtbot.forms.finder@default:default"/>
 <setEntry value="org.eclipse.swtbot.go@default:default"/>
-<setEntry value="org.eclipse.swtbot.junit4_x@default:default"/>
+<setEntry value="org.eclipse.swtbot.junit5_x@default:default"/>
 <setEntry value="org.eclipse.swtbot.swt.finder@default:default"/>
 <setEntry value="org.eclipse.team.core@default:default"/>
 <setEntry value="org.eclipse.team.ui@default:default"/>
@@ -269,7 +269,6 @@
 <setEntry value="org.eclipse.xtext.doc@default:default"/>
 <setEntry value="org.eclipse.xtext.ecore@default:default"/>
 <setEntry value="org.eclipse.xtext.xtext.generator@default:default"/>
-<setEntry value="org.eclipse.xtext.junit4@default:default"/>
 <setEntry value="org.eclipse.xtext.logging@default:false"/>
 <setEntry value="org.eclipse.xtext.purexbase.ui@default:default"/>
 <setEntry value="org.eclipse.xtext.purexbase@default:default"/>
diff --git a/ddk-target/ddk.target b/ddk-target/ddk.target
index a2ade38df0..c76e048d18 100644
--- a/ddk-target/ddk.target
+++ b/ddk-target/ddk.target
@@ -1,20 +1,24 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="DDK Target" sequenceNumber="27">
+<target name="DDK Target" sequenceNumber="28">
 <locations>
   <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
   <unit id="org.eclipse.swtbot.eclipse.feature.group" version="0.0.0"/>
   <unit id="org.eclipse.swtbot.feature.group" version="0.0.0"/>
   <unit id="org.eclipse.swtbot.ide.feature.group" version="0.0.0"/>
-  <unit id="org.eclipse.swtbot.eclipse.test.junit.feature.group" version="0.0.0"/>
-  <repository location="http://download.eclipse.org/technology/swtbot/releases/4.2.1/"/>
+  <unit id="org.eclipse.swtbot.junit5.feature.group" version="0.0.0"/>
+  <repository location="http://download.eclipse.org/technology/swtbot/releases/4.3.0/"/>
   </location>
   <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-    <unit id="org.eclipse.pde.source.feature.group" version="0.0.0"/>
-    <unit id="org.eclipse.jdt.source.feature.group" version="0.0.0"/>
+    <unit id="org.eclipse.pde.core" version="0.0.0"/>
     <unit id="org.eclipse.platform.feature.group" version="0.0.0"/>
-    <unit id="org.eclipse.platform.source.feature.group" version="0.0.0"/>
-    <repository location="https://download.eclipse.org/eclipse/updates/4.34/"/>
+    <unit id="org.eclipse.pde.core" version="0.0.0"/>
+    <unit id="org.eclipse.pde.ui" version="0.0.0"/>
+    <unit id="org.eclipse.pde.ua.core" version="0.0.0"/>
+    <unit id="org.eclipse.pde.junit.runtime" version="0.0.0"/>
+    <unit id="org.eclipse.jdt.junit.runtime" version="0.0.0"/>
+    <unit id="org.eclipse.jdt.annotation" version="0.0.0"/>
+    <repository location="https://download.eclipse.org/releases/2026-03/"/>
   </location>
   <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
   <unit id="org.eclipse.emf.sdk.feature.group" version="0.0.0"/>
@@ -42,27 +46,27 @@
     <unit id="org.eclipse.lsp4j.sdk.feature.group" version="0.0.0"/>
   </location>
   <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-    <repository location="https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/release/4.37.0"/>
-    <unit id="net.bytebuddy.byte-buddy" version="1.17.7"/>
-    <unit id="org.objenesis" version="3.4.0"/>
-    <unit id="org.mockito.mockito-core" version="5.19.0"/>
-    <unit id="org.hamcrest" version="2.2.0"/>
-    <unit id="org.apache.commons.logging" version="1.2.0"/>
-    <unit id="org.apache.commons.text" version="1.14.0"/>
-    <unit id="org.junit" version="4.13.2.v20240929-1000"/>
-    <unit id="org.apache.commons.lang3" version="3.18.0"/>
-    <unit id="org.apache.logging.log4j.core" version="2.25.1"/>
-    <unit id="org.apache.logging.log4j.api" version="2.25.1"/>
-    <unit id="org.apache.log4j" version="1.2.26"/> <!--use reload4j 1.2.26 for org.eclipse.xtext dependencies to log4j-->
-    <unit id="junit-jupiter-api" version="5.13.4"/>
-    <unit id="junit-jupiter-engine" version="5.13.4"/>
-    <unit id="junit-jupiter-params" version="5.13.4"/>
-    <unit id="junit-vintage-engine" version="5.13.4"/>
-    <unit id="junit-platform-commons" version="1.13.4"/>
-    <unit id="junit-platform-engine" version="1.13.4"/>
-    <unit id="junit-platform-launcher" version="1.13.4"/>
-    <unit id="junit-platform-suite-api" version="1.13.4"/>
-    <unit id="junit-platform-suite-engine" version="1.13.4"/>
+    <repository location="https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/release/4.39.0"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.18.5"/>
+      <unit id="org.objenesis" version="3.5.0"/>
+      <unit id="org.mockito.mockito-core" version="5.21.0"/>
+      <unit id="org.hamcrest" version="2.2.0"/>
+      <unit id="org.apache.commons.logging" version="1.2.0"/>
+      <unit id="org.apache.commons.text" version="1.15.0"/>
+      <unit id="org.apache.commons.lang3" version="3.20.0"/>
+      <unit id="org.apache.logging.log4j.core" version="2.25.3"/>
+      <unit id="org.apache.logging.log4j.api" version="2.25.3"/>
+      <unit id="org.apache.log4j" version="1.2.26"/> <!--use reload4j 1.2.26 for org.eclipse.xtext dependencies to log4j--> 
+  </location>
+  <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
+    <repository location="https://download.eclipse.org/tools/orbit/simrel/maven-osgi/release/4.39.0"/>
+      <unit id="junit-jupiter-api" version="5.14.3"/>
+      <unit id="junit-jupiter-params" version="5.14.3"/>
+      <unit id="junit-platform-commons" version="1.14.3"/>
+      <unit id="junit-platform-engine" version="1.14.3"/>
+      <unit id="junit-platform-launcher" version="1.14.3"/>
+      <unit id="junit-platform-suite-api" version="1.14.3"/>
+      <unit id="junit-platform-suite-engine" version="1.14.3"/>
   </location>
 </locations>
 </target>