diff --git a/.github/workflows/nebula-ci.yml b/.github/workflows/nebula-ci.yml
index a101c8330..3890c0235 100644
--- a/.github/workflows/nebula-ci.yml
+++ b/.github/workflows/nebula-ci.yml
@@ -12,8 +12,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        # test against JDK 8
-        java: [ 8 ]
+        # test against JDK 17
+        java: [ 17 ]
     name: CI with Java ${{ matrix.java }}
     steps:
       - name: Setup Git
diff --git a/.github/workflows/nebula-publish.yml b/.github/workflows/nebula-publish.yml
index 0c1cfcb4c..65f7ffa9d 100644
--- a/.github/workflows/nebula-publish.yml
+++ b/.github/workflows/nebula-publish.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Setup jdk
         uses: actions/setup-java@v2
         with:
-          java-version: 8
+          java-version: 17
           distribution: 'zulu'
       - name: Publish candidate
         if: contains(github.ref, '-rc.')
diff --git a/.github/workflows/push-docker-image.yml b/.github/workflows/push-docker-image.yml
index 9d6801be6..6152849a8 100644
--- a/.github/workflows/push-docker-image.yml
+++ b/.github/workflows/push-docker-image.yml
@@ -48,7 +48,7 @@ jobs:
       - name: Setup jdk
         uses: actions/setup-java@v1
         with:
-          java-version: 8
+          java-version: 17
 
       - name: Generate dockerfiles
         uses: gradle/gradle-build-action@v2