diff --git a/build.gradle b/build.gradle
index 908656e264..6b5f37f061 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,12 +49,12 @@ ext {
   }
 
   groovyDependencies = [
-    [group: groovyGroup, name: "groovy", version: groovyVersion]
+    dependencyFactory.create(groovyGroup, "groovy", groovyVersion)
   ]
   groovyConsoleExtraDependencies = [
-    [group: groovyGroup, name: "groovy-console", version: groovyVersion],
-    [group: groovyGroup, name: "groovy-test-junit5", version: groovyVersion], // for executing specs
-    [group: "org.apache.ivy", name: "ivy", version: "2.5.3"] // for @Grab support
+    dependencyFactory.create(groovyGroup, "groovy-console", groovyVersion),
+    dependencyFactory.create(groovyGroup, "groovy-test-junit5", groovyVersion), // for executing specs
+    dependencyFactory.create("org.apache.ivy", "ivy", "2.5.3"), // For @Grab support
   ]
   maxGroovyVersion = snapshotVersion ? "9.9.99" : maxGroovyVersion
   if (System.getProperty("groovyVersion")) {
diff --git a/gradle/publishMaven.gradle b/gradle/publishMaven.gradle
index e0f6534ca0..18edbb8648 100644
--- a/gradle/publishMaven.gradle
+++ b/gradle/publishMaven.gradle
@@ -8,15 +8,13 @@ ext {
 publishing {
   publications {
     maven(MavenPublication) {
-      afterEvaluate {
-        pom.packaging = project.ext.packaging
-        if (project.ext.packaging == "pom") {
-          from(components.javaPlatform)
-        } else {
-          from(components.java)
-          artifact(sourcesJar)
-          artifact(javadocJar)
-        }
+      pluginManager.withPlugin("java-library") {
+        from(components.java)
+        artifact(sourcesJar)
+        artifact(javadocJar)
+      }
+      pluginManager.withPlugin("java-platform") {
+        from(components.javaPlatform)
       }
       pom {
         name = provider { project.ext.displayName }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55baa..8bdaf60c75 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 78cb6e16a4..6a38a8cea6 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=bd71102213493060956ec229d946beee57158dbd89d0e62b91bca0fa2c5f3531
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionSha256Sum=a17ddd85a26b6a7f5ddb71ff8b05fc5104c0202c6e64782429790c933686c806
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 23d15a9367..adff685a03 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
diff --git a/gradlew.bat b/gradlew.bat
index db3a6ac207..c4bdd3ab8e 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -70,11 +70,10 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell
diff --git a/spock-core/core.gradle b/spock-core/core.gradle
index 0bc05f9684..9ca5447d75 100644
--- a/spock-core/core.gradle
+++ b/spock-core/core.gradle
@@ -47,13 +47,14 @@ dependencies {
 
 
 tasks.named("jar", Jar) {
+  def projName = project.name
   manifest {
     attributes(
       'Build-Revision': versioning.info.commit,
-      'Specification-Title': project.name,
+      'Specification-Title': projName,
       'Specification-Version': baseVersion,
       'Specification-Vendor': 'spockframework.org',
-      'Implementation-Title': project.name,
+      'Implementation-Title': projName,
       'Implementation-Version': variantLessVersion,
       'Implementation-Vendor': 'spockframework.org',
       'Automatic-Module-Name': 'org.spockframework.core'
diff --git a/spock-spring/boot2-test/boot2-test.gradle b/spock-spring/boot2-test/boot2-test.gradle
index 83b6436f3c..876e864a3c 100644
--- a/spock-spring/boot2-test/boot2-test.gradle
+++ b/spock-spring/boot2-test/boot2-test.gradle
@@ -1,3 +1,5 @@
+import org.springframework.boot.gradle.plugin.SpringBootPlugin
+
 /*
  * Copyright 2018 the original author or authors.
  *
@@ -15,8 +17,18 @@
  */
 
 plugins {
-  id "io.spring.dependency-management" version "1.0.5.RELEASE"
-  id 'org.springframework.boot' version "2.5.3"
+  // Normally, the Spring Boot 2 Gradle Plugin would not be compatible with Gradle 9+
+  // To get around this issue, we use the dependency-management plugin in isolation
+  // as described here: https://docs.spring.io/spring-boot/docs/2.7.7/gradle-plugin/reference/htmlsingle/#managing-dependencies.dependency-management-plugin.using-in-isolation
+  // This way, we get proper test execution and realistic version resolution on Gradle 9
+  id 'org.springframework.boot' version "2.7.18" apply false
+  id "io.spring.dependency-management" version "1.1.7"
+}
+
+dependencyManagement {
+  imports {
+    mavenBom SpringBootPlugin.BOM_COORDINATES
+  }
 }
 
 // Spring dependency management downgrades the jupiter version to 5.7.2 otherwise
diff --git a/spock-spring/boot3-test/boot3-test.gradle b/spock-spring/boot3-test/boot3-test.gradle
index 00e78c11e6..cb8f47b8b1 100644
--- a/spock-spring/boot3-test/boot3-test.gradle
+++ b/spock-spring/boot3-test/boot3-test.gradle
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 plugins {
-  id 'org.springframework.boot' version '3.0.0'
-  id 'io.spring.dependency-management' version '1.1.0'
+  id 'org.springframework.boot' version '3.5.5'
+  id 'io.spring.dependency-management' version '1.1.7'
   id 'groovy'
 }