diff --git a/.github/workflows/onboard-new-repo.yml b/.github/workflows/onboard-new-repo.yml
index 36dd5ba..8f14222 100644
--- a/.github/workflows/onboard-new-repo.yml
+++ b/.github/workflows/onboard-new-repo.yml
@@ -292,4 +292,4 @@ jobs:
             }
         env:
           SLACK_WEBHOOK_URL: ${{ secrets.APPSEC_BOT_SLACK_WEBHOOK }}
-          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          SLACK_WEBHOOK_TYPE: incoming-webhook
diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index 95f6048..c10e0b8 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -67,7 +67,7 @@ jobs:
             }
         env:
           SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          SLACK_WEBHOOK_TYPE: incoming-webhook
         continue-on-error: true
 
   publish-release:
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index 065fed5..b398cec 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -230,7 +230,7 @@ jobs:
             }
         env:
           SLACK_WEBHOOK_URL: ${{ env.SLACK_WEBHOOK }}
-          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          SLACK_WEBHOOK_TYPE: incoming-webhook
 
       - name: Log metrics
         if: ${{ env.PROJECT_METRICS_TOKEN != '' }}