diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4c000d7..1eced2e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,10 +15,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-java@v4.0.0
+      - uses: actions/setup-java@v4
         with:
           distribution: 'zulu'
-          java-version: '17'
+          java-version: '21'
       - name: Build JAR
         run: ./gradlew jar --info --stacktrace --console=plain --build-cache --no-daemon
       - name: Run tests
@@ -37,7 +37,7 @@ jobs:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
       - name: Upload JAR
         if: github.ref == 'refs/heads/master'
-        uses: actions/upload-artifact@v4.0.0
+        uses: actions/upload-artifact@v4
         with:
           name: wiclax4j
           path: build/libs/*.jar
diff --git a/build.gradle.kts b/build.gradle.kts
index d220aea..cc6ba68 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -28,7 +28,7 @@ dependencies {
     compileOnly("org.projectlombok:lombok:1.18.30")
     annotationProcessor("org.projectlombok:lombok:1.18.30")
 
-    testImplementation("org.apache.groovy:groovy-all:4.0.17")
+    testImplementation("org.apache.groovy:groovy-all:4.0.20")
     testImplementation("org.spockframework:spock-core:2.3-groovy-4.0")
     testImplementation("net.bytebuddy:byte-buddy:1.14.11")
     testImplementation("org.objenesis:objenesis:3.3")
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1af9e09..a80b22c 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-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME