diff --git a/.github/workflows/nightly-check-ci.yml b/.github/workflows/nightly-check-ci.yml
index 020677ca8c8..f4f5d63aa6f 100644
--- a/.github/workflows/nightly-check-ci.yml
+++ b/.github/workflows/nightly-check-ci.yml
@@ -123,6 +123,7 @@ jobs:
           SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_NIGHTLY_FAILURE }}
           
   combined-coverage-report:
+    if: ${{ github.event_name == 'schedule' || startsWith(github.ref_name, 'coverage/') }}
     needs: nightly
     runs-on: ubuntu-24.04
     steps:
@@ -137,12 +138,12 @@ jobs:
           pattern: coverage-*-results
           merge-multiple: true
 
-      - name: Setup JDK 17
-        id: setup-java-17
+      - name: Setup JDK 21
+        id: setup-java-21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
 
       - name: Setup JDK 11
         id: setup-java-11