diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 5b32055..6599dbc 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -11,11 +11,11 @@ jobs:
         uses: actions/checkout@v4
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v2
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
           check-latest: true
       - name: Build with Gradle
         run: ./gradlew build
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 5cb4dd4..27b8eb7 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -13,11 +13,11 @@ jobs:
         uses: actions/checkout@v4
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v2
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
           check-latest: true
       - name: Upload assets to releases
         run: ./gradlew build publishAllPublicationsToFlashyReeseReleasesRepository
diff --git a/.github/workflows/self-hosted.yml b/.github/workflows/self-hosted.yml
index 2773568..50c876a 100644
--- a/.github/workflows/self-hosted.yml
+++ b/.github/workflows/self-hosted.yml
@@ -11,11 +11,11 @@ jobs:
         uses: actions/checkout@v4
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v2
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 17
+          java-version: 21
           check-latest: true
       - name: Build with Gradle
         run: ./gradlew build