diff --git a/.github/workflows/ci-4.x.yml b/.github/workflows/ci-4.x.yml
deleted file mode 100644
index fd0c0a24..00000000
--- a/.github/workflows/ci-4.x.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: vertx-json-schema (4.x)
-on:
-  schedule:
-    - cron: '0 4 * * *'
-jobs:
-  CI:
-    strategy:
-      matrix:
-        include:
-          - os: ubuntu-latest
-            jdk: 8
-          - os: windows-latest
-            jdk: 8
-          - os: ubuntu-latest
-            jdk: 17
-    uses: ./.github/workflows/ci.yml
-    with:
-      branch: 4.x
-      jdk: ${{ matrix.jdk }}
-      os: ${{ matrix.os }}
-    secrets: inherit
-  Deploy:
-    if: ${{ github.repository_owner == 'eclipse-vertx' && (github.event_name == 'push' || github.event_name == 'schedule') }}
-    needs: CI
-    uses: ./.github/workflows/deploy.yml
-    with:
-      branch: 4.x
-      jdk: 8
-    secrets: inherit
diff --git a/.github/workflows/ci-5.x.yml b/.github/workflows/ci-5.x.yml
deleted file mode 100644
index e7b9ac7c..00000000
--- a/.github/workflows/ci-5.x.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: vertx-json-schema (5.x)
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
-  schedule:
-    - cron: '0 5 * * *'
-jobs:
-  CI:
-    strategy:
-      matrix:
-        include:
-          - os: ubuntu-latest
-            jdk: 11
-          - os: windows-latest
-            jdk: 11
-          - os: ubuntu-latest
-            jdk: 17
-    uses: ./.github/workflows/ci.yml
-    with:
-      branch: ${{ github.event.pull_request.head.sha || github.ref_name }}
-      jdk: ${{ matrix.jdk }}
-      os: ${{ matrix.os }}
-    secrets: inherit
-  Deploy:
-    if: ${{ github.repository_owner == 'eclipse-vertx' && (github.event_name == 'push' || github.event_name == 'schedule') }}
-    needs: CI
-    uses: ./.github/workflows/deploy.yml
-    with:
-      branch: ${{ github.event.pull_request.head.sha || github.ref_name }}
-      jdk: 11
-    secrets: inherit
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index f6988080..00000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: CI
-on:
-  workflow_call:
-    inputs:
-      branch:
-        required: true
-        type: string
-      jdk:
-        default: 8
-        type: string
-      os:
-        default: ubuntu-latest
-        type: string
-jobs:
-  Test:
-    name: Run tests
-    runs-on: ${{ inputs.os }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-        with:
-          ref: ${{ inputs.branch }}
-      - name: Install JDK
-        uses: actions/setup-java@v2
-        with:
-          java-version: ${{ inputs.jdk }}
-          distribution: temurin
-      - name: Run tests
-        run: mvn -s .github/maven-ci-settings.xml -q clean verify -B
diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
new file mode 100644
index 00000000..a3a1f44f
--- /dev/null
+++ b/.github/workflows/debug.yml
@@ -0,0 +1,24 @@
+name: vertx-json-schema (5.x)
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  Debug:
+    name: Debug env issue
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          ref: master
+      - name: Install JDK
+        uses: actions/setup-java@v2
+        with:
+          java-version: 11
+          distribution: temurin
+      - name: Get project version
+        run: echo "PROJECT_VERSION=$(mvn org.apache.maven.plugins:maven-help-plugin:evaluate -Dexpression=project.version -q -DforceStdout | grep -v '\[')" >> $GITHUB_ENV