diff --git a/.github/actions/apt-x32/action.yml b/.github/actions/apt-x32/action.yml
index 2cde60fce55..879300f9927 100644
--- a/.github/actions/apt-x32/action.yml
+++ b/.github/actions/apt-x32/action.yml
@@ -13,6 +13,7 @@ runs:
         apt-get install -y \
           autoconf \
           bison \
+          curl \
           g++-multilib \
           gcc-multilib \
           language-pack-de \
diff --git a/.github/actions/notify-slack/action.yml b/.github/actions/notify-slack/action.yml
index f447894a21d..1ff425b51c6 100644
--- a/.github/actions/notify-slack/action.yml
+++ b/.github/actions/notify-slack/action.yml
@@ -5,11 +5,6 @@ inputs:
 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: ${{ inputs.token }}
+    - shell: bash
+      run: >-
+        curl -X POST -H 'Content-type: application/json' --data '{"attachments": [{"text": "Job in *nightly* failed", "footer": "<https://github.com/php/php-src/actions/runs/${{ github.run_id }}|View Run>", "color": "danger", "mrkdwn_in": ["text"]}]}' ${{ inputs.token }}
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 1852ee9eb04..0bcd9dab62e 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -33,7 +33,7 @@ jobs:
         id: set-matrix
         run: php .github/nightly_matrix.php "${{ github.event_name }}" "${{ github.run_attempt }}"
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -123,7 +123,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -199,7 +199,7 @@ jobs:
             -d opcache.jit_buffer_size=16M
             -d opcache.jit=1205
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -267,7 +267,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -313,7 +313,7 @@ jobs:
         if: always()
         run: bash <(curl -s https://codecov.io/bash)
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -433,7 +433,7 @@ jobs:
             exit 1
           fi
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -516,7 +516,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -614,7 +614,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -674,7 +674,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}
@@ -782,7 +782,7 @@ jobs:
           ./configure --prefix=/opt/php --with-php-config=/opt/php/bin/php-config
           make -j$(/usr/bin/nproc)
       - name: Notify Slack
-        if: always()
+        if: failure()
         uses: ./.github/actions/notify-slack
         with:
           token: ${{ secrets.ACTION_MONITORING_SLACK }}