diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 888f04c9b..882dcf716 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -9,10 +9,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           java-package: jdk+fx
           distribution: zulu
       - name: Build and test with gradle
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 62307648f..1ab5e26b3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,10 +10,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           java-package: jdk+fx
           distribution: zulu
       - name: Cache local Maven repository
diff --git a/build.gradle b/build.gradle
index 7edb92ea7..aaf388191 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ import java.nio.file.Files
 plugins {
     id 'application'
     id 'com.github.jk1.dependency-license-report' version "2.0"
-    id "org.sonarqube" version "7.3.0.8198"
+    id "org.sonarqube" version "7.3.1.8318"
     id 'org.openjfx.javafxplugin' version '0.1.0'
 }
 
@@ -32,28 +32,28 @@ def jarName = 'MServer.jar'
 def mainClass = 'mServer.Main'
 
 dependencies {
-    implementation 'commons-net:commons-net:3.12.0'
+    implementation 'commons-net:commons-net:3.13.0'
     implementation 'org.apache.commons:commons-compress:1.28.0'
-    implementation 'org.apache.commons:commons-text:1.14.0'
-    implementation 'org.tukaani:xz:1.10'
-    implementation 'com.google.code.gson:gson:2.13.1'
-    implementation 'org.glassfish.jersey.core:jersey-client:3.1.11'
-    implementation 'org.glassfish.jersey.inject:jersey-hk2:3.1.11'
-    implementation 'org.jsoup:jsoup:1.21.1'
-    implementation 'jakarta.activation:jakarta.activation-api:2.1.3'
-    implementation 'com.google.guava:guava:33.4.8-jre'
-    implementation 'org.apache.logging.log4j:log4j-core:2.25.1'
+    implementation 'org.apache.commons:commons-text:1.15.0'
+    implementation 'org.tukaani:xz:1.12'
+    implementation 'com.google.code.gson:gson:2.14.0'
+    implementation 'org.glassfish.jersey.core:jersey-client:3.1.12'
+    implementation 'org.glassfish.jersey.inject:jersey-hk2:3.1.12'
+    implementation 'org.jsoup:jsoup:1.22.2'
+    implementation 'jakarta.activation:jakarta.activation-api:2.1.4'
+    implementation 'com.google.guava:guava:33.6.0-jre'
+    implementation 'org.apache.logging.log4j:log4j-core:2.26.1'
     implementation 'fm.void.jetm:jetm:1.2.3'
     implementation 'com.jidesoft:jide-oss:3.6.18'
     implementation 'com.squareup.okhttp3:okhttp:4.12.0'
-    implementation 'com.fasterxml.jackson.core:jackson-core:2.15.0'
-    testImplementation 'org.mockito:mockito-core:4.11.0'
-    testImplementation 'com.squareup.okhttp3:mockwebserver:4.10.0'
+    implementation 'com.fasterxml.jackson.core:jackson-core:2.22.1'
+    testImplementation 'org.mockito:mockito-core:5.23.0'
+    testImplementation 'com.squareup.okhttp3:mockwebserver:4.12.0'
     testImplementation "org.hamcrest:hamcrest-junit:2.0.0.0"
-    testImplementation 'org.assertj:assertj-core:3.23.1'
-    testImplementation "org.hamcrest:hamcrest:2.2"
-    testImplementation "org.junit.jupiter:junit-jupiter:5.14.4"
-    testImplementation "org.junit.platform:junit-platform-launcher:1.14.4"
+    testImplementation 'org.assertj:assertj-core:3.27.7'
+    testImplementation "org.hamcrest:hamcrest:3.0"
+    testImplementation "org.junit.jupiter:junit-jupiter:6.1.2"
+    testImplementation "org.junit.platform:junit-platform-launcher:6.1.1"
 }
 
 
@@ -274,6 +274,6 @@ sonarqube {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }
diff --git a/src/main/java/mServer/crawler/AddToFilmlist.java b/src/main/java/mServer/crawler/AddToFilmlist.java
index e83efad6d..2e19ef12f 100644
--- a/src/main/java/mServer/crawler/AddToFilmlist.java
+++ b/src/main/java/mServer/crawler/AddToFilmlist.java
@@ -17,7 +17,6 @@
 import mServer.tool.MserverDaten;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
-import okhttp3.Request.Builder;
 import okhttp3.Response;
 import org.jetbrains.annotations.NotNull;
 
@@ -400,7 +399,7 @@ private boolean orfRemovedVideo(DatenFilm film, Response response) {
 
     @NotNull
     private Request createOnlineCheckRequest(String url) {
-      Builder builder = new Builder().url(url);
+      Request.Builder builder = new Request.Builder().url(url);
       if (isM3u8File(url)) {
         // head request of m3u8 files always returns 405 => use get instead
         return builder.get().build();