diff --git a/org.eclipse.xtend.maven.archetype/pom.xml b/org.eclipse.xtend.maven.archetype/pom.xml
index 2433a846a86..191d830b26c 100644
--- a/org.eclipse.xtend.maven.archetype/pom.xml
+++ b/org.eclipse.xtend.maven.archetype/pom.xml
@@ -66,6 +66,7 @@
 						<extraArtifact>org.eclipse.xtext:xtext-dev-bom:${project.version}:pom</extraArtifact>
 					</extraArtifacts>
 					<localRepositoryPath>${localMavenRepositoryPath}</localRepositoryPath>
+					<scope>provided</scope>
 				</configuration>
 				<executions>
 					<execution>
@@ -74,9 +75,6 @@
 						<goals>
 							<goal>install</goal>
 						</goals>
-						<configuration>
-							<scope>test</scope>
-						</configuration>
 					</execution>
 				</executions>
 			</plugin>
@@ -105,7 +103,7 @@
 			<groupId>org.eclipse.xtext</groupId>
 			<artifactId>xtend-maven-plugin</artifactId>
 			<version>${project.version}</version>
-			<scope>test</scope>
+			<scope>provided</scope>
 		</dependency>
 	</dependencies>
 	<profiles>
diff --git a/org.eclipse.xtend.tycho.tests.parent/pom.xml b/org.eclipse.xtend.tycho.tests.parent/pom.xml
index edab46567f9..998f7cfd26c 100644
--- a/org.eclipse.xtend.tycho.tests.parent/pom.xml
+++ b/org.eclipse.xtend.tycho.tests.parent/pom.xml
@@ -126,6 +126,11 @@
 							<include>**/*Test?.java</include>
 						</includes>
 						<appArgLine>-pluginCustomization ${basedir}/../releng/org.eclipse.xtend.tycho.tests.parent/pluginCustomization.ini</appArgLine>
+						<!-- Tycho 5.0 defaults to JUnitPlatformProvider, which causes a classloader
+						     conflict: TestEngine.class from the OSGi bundle classloader vs
+						     JupiterTestEngine found via ServiceLoader on the flat JVM classpath.
+						     These test bundles use JUnit 4 only — force the JUnit 4 provider. -->
+						<useJUnitPlatform>false</useJUnitPlatform>
 					</configuration>
 				</plugin>
 			</plugins>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/full/full.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/full/full.parent/pom.xml
index 41694d765a4..a97f30378f6 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/full/full.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/full/full.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoApp/lsMavenTychoApp.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoApp/lsMavenTychoApp.parent/pom.xml
index b80d9c525b6..07683604c7c 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoApp/lsMavenTychoApp.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoApp/lsMavenTychoApp.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoFatjar/lsMavenTychoFatjar.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoFatjar/lsMavenTychoFatjar.parent/pom.xml
index f91e1e4528b..581f40644ac 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoFatjar/lsMavenTychoFatjar.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/lsMavenTychoFatjar/lsMavenTychoFatjar.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTycho/mavenTycho.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTycho/mavenTycho.parent/pom.xml
index 622382340bf..fa411420682 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTycho/mavenTycho.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTycho/mavenTycho.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJUnit5/mavenTychoJUnit5.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJUnit5/mavenTychoJUnit5.parent/pom.xml
index 03c661faaf4..0a29ae72b23 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJUnit5/mavenTychoJUnit5.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoJUnit5/mavenTychoJUnit5.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2/mavenTychoP2.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2/mavenTychoP2.parent/pom.xml
index cf72da03862..4e1176da32e 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2/mavenTychoP2.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2/mavenTychoP2.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J21/mavenTychoP2J21.parent/pom.xml b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J21/mavenTychoP2J21.parent/pom.xml
index 3c1abba142f..cf57dee1b9c 100644
--- a/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J21/mavenTychoP2J21.parent/pom.xml
+++ b/org.eclipse.xtext.tests/testdata/wizard-expectations/mavenTychoP2J21/mavenTychoP2J21.parent/pom.xml
@@ -13,7 +13,7 @@
 		<maven.compiler.source>21</maven.compiler.source>
 		<maven.compiler.target>21</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<!-- Define overridable properties for tycho-surefire-plugin -->
 		<platformSystemProperties></platformSystemProperties>
 		<moduleProperties></moduleProperties>
diff --git a/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/pom.xml b/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/pom.xml
index 425021fb35b..d5ac37da90c 100644
--- a/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/pom.xml
+++ b/org.eclipse.xtext.xtext.ui.examples/projects/domainmodel/org.eclipse.xtext.example.domainmodel.releng/pom.xml
@@ -19,12 +19,12 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<!-- although this example and the Xtext dependencies work and compile with
-		Java 8 you need to execute the Maven build with Java 11 as parts of Eclipse
-		2020-09+ require Java 11 -->
+		Java 17 you need to execute the Maven build with Java 21 as parts of Eclipse
+		2024-03+ require Java 17 and Tycho requires Java 21. -->
 		<maven.compiler.source>17</maven.compiler.source>
 		<maven.compiler.target>17</maven.compiler.target>
 		<!-- Tycho settings -->
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 		<targetplatform.groupId>${project.groupId}</targetplatform.groupId>
 		<targetplatform.artifactId>${project.groupId}.tp</targetplatform.artifactId>
 		<targetplatform.version>${project.version}</targetplatform.version>
diff --git a/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.xtend b/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.xtend
index 971940a1441..13cd9716a23 100644
--- a/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.xtend
+++ b/org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.xtend
@@ -69,7 +69,7 @@ class ParentProjectDescriptor extends ProjectDescriptor {
 	}
 
 	def String getTychoVersion() {
-		'4.0.13'
+		'5.0.2'
 	}
 
 	def private CharSequence loadResource(String resourcePath) {
diff --git a/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.java b/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.java
index 41e95708717..02667459158 100644
--- a/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.java
+++ b/org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/ParentProjectDescriptor.java
@@ -105,7 +105,7 @@ public String getJavaVersion() {
   }
 
   public String getTychoVersion() {
-    return "4.0.13";
+    return "5.0.2";
   }
 
   private CharSequence loadResource(final String resourcePath) {
diff --git a/pom.xml b/pom.xml
index e03b9dbb51e..9bca0cba405 100644
--- a/pom.xml
+++ b/pom.xml
@@ -125,7 +125,7 @@
 
 	<properties>
 		<project.build.sourceEncoding>ISO-8859-1</project.build.sourceEncoding>
-		<tycho-version>4.0.13</tycho-version>
+		<tycho-version>5.0.2</tycho-version>
 
 		<maven.compiler.release>17</maven.compiler.release>
 		<maven.compiler.source>${maven.compiler.release}</maven.compiler.source>