diff --git a/.github/workflows/maven-extension-publish.yml b/.github/workflows/maven-extension-publish.yml
index 120acff2..40f1162b 100644
--- a/.github/workflows/maven-extension-publish.yml
+++ b/.github/workflows/maven-extension-publish.yml
@@ -16,10 +16,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: '11'
+          java-version: '21'
           distribution: 'temurin'
           server-id: ossrh # Value of the distributionManagement/repository/id field of the pom.xml
           server-username: MAVEN_USERNAME # env variable for username in deploy
diff --git a/.github/workflows/maven-web-api-publish.yml b/.github/workflows/maven-web-api-publish.yml
index eff0fb81..dd3fe5f1 100644
--- a/.github/workflows/maven-web-api-publish.yml
+++ b/.github/workflows/maven-web-api-publish.yml
@@ -16,10 +16,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
+          java-version: '21'
           distribution: 'temurin'
           server-id: ossrh # Value of the distributionManagement/repository/id field of the pom.xml
           server-username: MAVEN_USERNAME # env variable for username in deploy
diff --git a/.github/workflows/ut.yml b/.github/workflows/ut.yml
index 9e50115c..b0d427b6 100644
--- a/.github/workflows/ut.yml
+++ b/.github/workflows/ut.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java-version: [ 8, 11 ]
+        java-version: [ 21 ]
     steps:
       - uses: actions/checkout@v3
       - name: "Test for JDK ${{ matrix.java-version }}"