diff --git a/.github/workflows/nightly-test-1.11.x.yaml b/.github/workflows/nightly-test-1.11.x.yaml
index cd913d4eca4..14356179edf 100644
--- a/.github/workflows/nightly-test-1.11.x.yaml
+++ b/.github/workflows/nightly-test-1.11.x.yaml
@@ -220,7 +220,7 @@ jobs:
     steps:
       - name: Slack Notification
         id: slack
-        uses: slackapi/slack-github-action@v1.19
+        uses: slackapi/slack-github-action@v1.21
         with:
           payload: |
             {
diff --git a/.github/workflows/nightly-test-1.12.x.yaml b/.github/workflows/nightly-test-1.12.x.yaml
index 906f2ba8fb3..7922fc0ee62 100644
--- a/.github/workflows/nightly-test-1.12.x.yaml
+++ b/.github/workflows/nightly-test-1.12.x.yaml
@@ -220,7 +220,7 @@ jobs:
     steps:
       - name: Slack Notification
         id: slack
-        uses: slackapi/slack-github-action@v1.19
+        uses: slackapi/slack-github-action@v1.21
         with:
           payload: |
             {
diff --git a/.github/workflows/nightly-test-1.13.x.yaml b/.github/workflows/nightly-test-1.13.x.yaml
index 2df70ff6880..95dd4960af0 100644
--- a/.github/workflows/nightly-test-1.13.x.yaml
+++ b/.github/workflows/nightly-test-1.13.x.yaml
@@ -220,7 +220,7 @@ jobs:
     steps:
       - name: Slack Notification
         id: slack
-        uses: slackapi/slack-github-action@v1.19
+        uses: slackapi/slack-github-action@v1.21
         with:
           payload: |
             {
diff --git a/.github/workflows/nightly-test-main.yaml b/.github/workflows/nightly-test-main.yaml
index e823bac7b56..45e17cf133c 100644
--- a/.github/workflows/nightly-test-main.yaml
+++ b/.github/workflows/nightly-test-main.yaml
@@ -220,7 +220,7 @@ jobs:
     steps:
       - name: Slack Notification
         id: slack
-        uses: slackapi/slack-github-action@v1.19
+        uses: slackapi/slack-github-action@v1.21
         with:
           payload: |
             {