diff --git a/.github/workflows/deploy-fleet-website.yml b/.github/workflows/deploy-fleet-website.yml
index fdcb25589d..612a52b9d2 100644
--- a/.github/workflows/deploy-fleet-website.yml
+++ b/.github/workflows/deploy-fleet-website.yml
@@ -127,6 +127,6 @@ jobs:
         # Push the parentless commit to Heroku
         # Note: The commit pushed to Heroku will not contain the full git history.
         # This lets up deploy the website from the Fleet monorepo while working around Heroku's pack size limits. 
-        git push heroku "$COMMIT":master --force
+        git push heroku "$COMMIT":refs/heads/master --force
     - name: 🌐 https://fleetdm.com
       run: echo '' && echo '--' && echo 'OK, done.  It should be live momentarily.' && echo '(if you get impatient, check the Heroku dashboard for status)' && echo && echo ' 🌐–•  https://fleetdm.com'