diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d4081da4..dbc3ce4a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 8ee2d9f1..823a3ac1 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -25,9 +25,11 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.11.1")
     testImplementation("org.junit.jupiter:junit-jupiter-params:5.11.1")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.11.1")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.11.1")
 }
 tasks.getByName<Test>("test") {
     useJUnitPlatform()
+    javaLauncher = javaToolchains.launcherFor { languageVersion = JavaLanguageVersion.of(21) }
     maxParallelForks = 4
 }