diff --git a/.github/actions/notify-slack/action.yml b/.github/actions/notify-slack/action.yml
new file mode 100644
index 00000000000..f447894a21d
--- /dev/null
+++ b/.github/actions/notify-slack/action.yml
@@ -0,0 +1,15 @@
+name: Notify Slack
+inputs:
+  token:
+    required: true
+runs:
+  using: composite
+  steps:
+    - name: Notify Slack
+      if: always()
+      uses: ravsamhq/notify-slack-action@v1
+      with:
+        status: ${{ job.status }}
+        notify_when: 'failure'
+      env:
+        SLACK_WEBHOOK_URL: ${{ inputs.token }}
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 108b75d3f75..df37489aeb1 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -30,6 +30,11 @@ jobs:
       - name: Generate Matrix
         id: set-matrix
         run: php .github/nightly_matrix.php "${{ github.event_name }}" "${{ github.run_attempt }}"
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   LINUX_X64:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -108,6 +113,11 @@ jobs:
             -d opcache.jit=1205
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   LINUX_X32:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -179,6 +189,11 @@ jobs:
             -d opcache.enable_cli=1
             -d opcache.jit_buffer_size=16M
             -d opcache.jit=1205
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   MACOS:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -242,6 +257,11 @@ jobs:
             -d opcache.jit=1205
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   COVERAGE_DEBUG_NTS:
     if: github.repository_owner == 'php' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-20.04
@@ -276,6 +296,11 @@ jobs:
       - name: Upload Test Coverage to Codecov.io
         if: always()
         run: bash <(curl -s https://codecov.io/bash)
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   COMMUNITY:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -391,6 +416,11 @@ jobs:
           if [ $EXIT_CODE -gt 128 ]; then
             exit 1
           fi
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   OPCACHE_VARIATION:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -462,6 +492,11 @@ jobs:
             -d opcache.file_cache_only=1
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   MSAN:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -554,6 +589,11 @@ jobs:
             -d opcache.enable_cli=1
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}
   LIBMYSQLCLIENT:
     needs: GENERATE_MATRIX
     if: ${{ needs.GENERATE_MATRIX.outputs.branches != '[]' }}
@@ -609,3 +649,8 @@ jobs:
           withMysqli: ${{ matrix.branch.ref == 'PHP-8.1' }}
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
+      - name: Notify Slack
+        if: always()
+        uses: ./.github/actions/notify-slack
+        with:
+          token: ${{ secrets.ACTION_MONITORING_SLACK }}