diff --git a/.github/workflows/dco.yml b/.github/workflows/dco.yml
deleted file mode 100644
index da0d2115a..000000000
--- a/.github/workflows/dco.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-name: DCO
-
-on: [pull_request]
-
-jobs:
-  dco_check:
-    runs-on: ubuntu-latest
-    name: DCO
-    if: ${{ github.actor != 'dependabot[bot]' }}
-    steps:
-    - name: Get PR Commits
-      id: 'get-pr-commits'
-      uses: tim-actions/get-pr-commits@198af03565609bb4ed924d1260247b4881f09e7d
-      with:
-        token: ${{ secrets.GITHUB_TOKEN }}
-    - name: DCO Check
-      uses: tim-actions/dco@f2279e6e62d5a7d9115b0cb8e837b777b1b02e21
-      with:
-        commits: ${{ steps.get-pr-commits.outputs.commits }}
diff --git a/.github/workflows/update-test-reports.yml b/.github/workflows/update-test-reports.yml
deleted file mode 100644
index fd0266dd5..000000000
--- a/.github/workflows/update-test-reports.yml
+++ /dev/null
@@ -1,51 +0,0 @@
-name: update-test-reports
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  syncTestReports:
-    if: github.repository == 'hyperledger/besu'
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Get latest merge PR number
-        id: latest_merged_pr_number
-        run: echo "PULL_REQUEST_NUMBER=$(gh pr list --repo hyperledger/besu --base main --state merged --json "number,mergedAt" --search "sort:updated-desc" --jq 'max_by(.mergedAt)|.number')" >> "$GITHUB_OUTPUT"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Get unit test reports from latest merged PR
-        uses: dawidd6/action-download-artifact@e7466d1a7587ed14867642c2ca74b5bcc1e19a2d
-        with:
-          workflow: pre-review.yml
-          workflow_conclusion: success
-          pr: ${{ env.LATEST_MERGED_PR_NUMBER }}
-          name_is_regexp: true
-          name: 'unit-\d+-test-results'
-          path: unit-test-results
-          if_no_artifact_found: fail
-        env:
-          LATEST_MERGED_PR_NUMBER: ${{ steps.latest_merged_pr_number.outputs.PULL_REQUEST_NUMBER }}
-      - name: Upload unit test results
-        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
-        with:
-          name: unit-test-results
-          path: 'unit-test-results/**/test-results/**/TEST-*.xml'
-      - name: Get acceptance test reports from latest merged PR
-        uses: dawidd6/action-download-artifact@e7466d1a7587ed14867642c2ca74b5bcc1e19a2d
-        with:
-          workflow: acceptance-tests.yml
-          workflow_conclusion: success
-          pr: ${{ env.LATEST_MERGED_PR_NUMBER }}
-          name_is_regexp: true
-          name: 'acceptance-node-\d+-test-results'
-          path: acceptance-test-results
-          if_no_artifact_found: fail
-        env:
-          LATEST_MERGED_PR_NUMBER: ${{ steps.latest_merged_pr_number.outputs.PULL_REQUEST_NUMBER }}
-      - name: Upload acceptance test results
-        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
-        with:
-          name: acceptance-test-results
-          path: 'acceptance-test-results/**/TEST-*.xml'
diff --git a/.github/workflows/workflow.yaml b/.github/workflows/workflow.yaml
index 5075fd991..608dba612 100644
--- a/.github/workflows/workflow.yaml
+++ b/.github/workflows/workflow.yaml
@@ -19,11 +19,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: 17
-          distribution: 'adopt'
+          java-version: 21
+          distribution: temurin
 
       - name: Cache Gradle dependencies
         uses: actions/cache@v3
@@ -64,11 +64,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: 17
-          distribution: 'adopt'
+          java-version: 21
+          distribution: temurin
 
       - name: Publish Java artifacts
         run: ./gradlew publish -x checkLicense