diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e132ef..fcf99c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ 11, 17 ]
+        java: [ 21 ]
         os: [ macos-latest, ubuntu-latest, windows-latest ]
         withAuth: [ testWithoutAuth, testWithAuth ]
     name: Java ${{ matrix.java }} @ ${{ matrix.os }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 848f4cd..497518a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -15,7 +15,7 @@ jobs:
             - name: Set up Java
               uses: actions/setup-java@v3
               with:
-                  java-version: '11'
+                  java-version: '21'
                   distribution: 'adopt'
             - name: Publish package
               run: ./gradlew publish