diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5a8f068..33abe87 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
       - name: 'Set up JDK'
         uses: actions/setup-java@v5
         with:
-          java-version: 8
+          java-version: 17
           distribution: temurin
       - name: Init Gradle Build Action
         uses: gradle/actions/setup-gradle@v5
@@ -38,7 +38,7 @@ jobs:
       - name: 'Set up JDK'
         uses: actions/setup-java@v5
         with:
-          java-version: 8
+          java-version: 17
           distribution: temurin
       - name: 'Check Spock'
         run: |
@@ -57,7 +57,7 @@ jobs:
       - name: 'Set up JDK'
         uses: actions/setup-java@v5
         with:
-          java-version: 8
+          java-version: 17
           distribution: temurin
       - name: 'Check Spock'
         run: |
diff --git a/README.adoc b/README.adoc
index 1f029d4..0c11e14 100644
--- a/README.adoc
+++ b/README.adoc
@@ -14,12 +14,17 @@ All builds (Gradle and Maven) will automatically download all required dependenc
 
 === Prerequisites
 
-- JDK 8 or higher
+- JDK 17 or higher
 - Maven use `mvnw` wrapper
 - Gradle use `gradlew` wrapper
 
 NOTE: This example shows the usage of Spock 2.0, which uses the JUnit Platform. If you want to see how to get Spock 1.x with JUnit 4 up and running see the https://github.com/spockframework/spock-example/tree/spock-1.x[Spock-1.x] Branch.
 
+NOTE: Spock supports Java 8, but Groovy 5.0 requires Java 11+ and Gradle 9+ requires Java 17+.
+      So for simplicity’s sake the example uses Java 17.
+      If you want to use an older Java version, please use an older Gradle version (e.g. Gradle 8.x for Java 8+).
+     Check the https://github.com/spockframework/spock-example/tree/java-8[Java-8] Branch for the last state of the example with Java 8.
+
 === Building with Gradle
 Type:
 
@@ -61,4 +66,3 @@ If you have any comments or questions, please direct them to the Spock discussio
 Happy spec'ing!
 
 The Spock Framework Team
-
diff --git a/build.gradle b/build.gradle
index 81f98d7..160d449 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ description = "Spock Framework - Example Project"
 // Spock works with Java 1.8 and above
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(8))
+        languageVersion.set(JavaLanguageVersion.of(17))
     }
 }
 
@@ -21,11 +21,13 @@ repositories {
 
 dependencies {
   // mandatory dependencies for using Spock
-  implementation platform('org.apache.groovy:groovy-bom:4.0.29')
+  implementation platform('org.apache.groovy:groovy-bom:5.0.3')
   implementation 'org.apache.groovy:groovy'
-  testImplementation platform("org.spockframework:spock-bom:2.3-groovy-4.0")
+  testImplementation platform("org.spockframework:spock-bom:2.4-groovy-5.0")
   testImplementation "org.spockframework:spock-core"
   testImplementation "org.spockframework:spock-junit4"  // you can remove this if your code does not rely on old JUnit 4 rules
+  testImplementation(platform('org.junit:junit-bom:6.0.1'))
+  testRuntimeOnly('org.junit.platform:junit-platform-launcher')
 
   // optional dependencies for using Spock
   testImplementation "org.hamcrest:hamcrest-core:3.0"   // only necessary if Hamcrest matchers are used
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 36e4933..8a84887 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=20f1b1176237254a6fc204d8434196fa11a4cfb387567519c61556e8710aed78
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionSha256Sum=72f44c9f8ebcb1af43838f45ee5c4aa9c5444898b3468ab3f4af7b6076c5bc3f
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/ivy.xml b/ivy.xml
index 2c10e9c..09945b8 100644
--- a/ivy.xml
+++ b/ivy.xml
@@ -26,22 +26,22 @@
     <publications defaultconf="master"/>
 
     <dependencies defaultconf="compile;sources;javadoc">
-        <dependency org="org.apache.groovy" name="groovy-ant" rev="4.0.26" conf="groovy-ant;sources;javadoc"/>
-        <dependency org="org.apache.groovy" name="groovy-groovydoc" rev="4.0.26" conf="groovy-ant;sources;javadoc"/>
-        <dependency org="org.apache.groovy" name="groovy" rev="4.0.26" conf="test;sources;javadoc"/>
+        <dependency org="org.apache.groovy" name="groovy-ant" rev="5.0.3" conf="groovy-ant;sources;javadoc"/>
+        <dependency org="org.apache.groovy" name="groovy-groovydoc" rev="5.0.3" conf="groovy-ant;sources;javadoc"/>
+        <dependency org="org.apache.groovy" name="groovy" rev="5.0.3" conf="test;sources;javadoc"/>
         <!-- Mandatory dependencies for using Spock -->
-        <dependency org="org.spockframework" name="spock-core" rev="2.3-groovy-4.0" conf="test;sources;javadoc"/>
-        <dependency org="org.junit.platform" name="junit-platform-launcher" rev="1.12.1" conf="test;sources;javadoc"/>
+        <dependency org="org.spockframework" name="spock-core" rev="2.4-groovy-5.0" conf="test;sources;javadoc"/>
+        <dependency org="org.junit.platform" name="junit-platform-launcher" rev="6.0.1" conf="test;sources;javadoc"/>
         <!-- Optional dependencies for using Spock -->
         <!-- enables mocking of classes (in addition to interfaces) -->
         <dependency org="org.objenesis" name="objenesis" rev="3.4" conf="test;sources;javadoc"/>
         <dependency org="net.bytebuddy" name="byte-buddy" rev="1.17.5" conf="test;sources;javadoc"/>
         <!-- Dependencies used by examples in this project (not required for using Spock) -->
-        <dependency org="org.apache.groovy" name="groovy-sql" rev="4.0.26" conf="test;sources;javadoc"/>
-        <dependency org="org.spockframework" name="spock-junit4" rev="2.3-groovy-4.0" conf="test;sources;javadoc"/>
+        <dependency org="org.apache.groovy" name="groovy-sql" rev="5.0.3" conf="test;sources;javadoc"/>
+        <dependency org="org.spockframework" name="spock-junit4" rev="2.4-groovy-5.0" conf="test;sources;javadoc"/>
         <dependency org="com.h2database" name="h2" rev="2.2.224" conf="test;sources;javadoc"/>
         <!-- For using the scriptselector with Groovy -->
-        <dependency org="org.apache.groovy" name="groovy-jsr223" rev="4.0.26" conf="groovy-script;sources;javadoc"/>
+        <dependency org="org.apache.groovy" name="groovy-jsr223" rev="5.0.3" conf="groovy-script;sources;javadoc"/>
         <dependency org="org.ow2.asm" name="asm" rev="9.8" conf="groovy-script;sources;javadoc"/>
     </dependencies>
 </ivy-module>
diff --git a/pom.xml b/pom.xml
index 93b482c..d630fc9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,11 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <groovy.version>4.0.29</groovy.version>
+    <maven.compiler.source>17</maven.compiler.source>
+    <maven.compiler.target>17</maven.compiler.target>
+    <spock.version>2.4-groovy-5.0</spock.version>
+    <groovy.version>5.0.3</groovy.version>
+    <junit.version>6.0.1</junit.version>
   </properties>
 
   <build>
@@ -69,10 +73,17 @@
       <dependency>
         <groupId>org.spockframework</groupId>
         <artifactId>spock-bom</artifactId>
-        <version>2.3-groovy-4.0</version>
+        <version>${spock.version}</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+       <dependency>
+         <groupId>org.junit</groupId>
+         <artifactId>junit-bom</artifactId>
+         <version>${junit.version}</version>
+         <type>pom</type>
+         <scope>import</scope>
+       </dependency>
     </dependencies>
   </dependencyManagement>