diff --git a/.github/workflows/deploy.pantheon.sftp.yml b/.github/workflows/deploy.pantheon.sftp.yml
index 50eee50..d7b3b56 100644
--- a/.github/workflows/deploy.pantheon.sftp.yml
+++ b/.github/workflows/deploy.pantheon.sftp.yml
@@ -3,6 +3,7 @@ name: Deploy to Pantheon (SFTP)
 on:
   push:
     branches: [main]
+  pull_request:
   workflow_dispatch:
 
 jobs:
@@ -46,7 +47,8 @@ jobs:
           eval `ssh-agent`
           ssh-add ~/.ssh/id_rsa
 
-      - name: Deploy to Pantheon via SFTP
-        if: ${{ vars.DEPLOY_TO_PANTHEON_SFTP }}
-        run: |
-          echo "This is a test"
+      - name: Install Terminus
+        uses: pantheon-systems/terminus-github-actions@1.1.0
+
+      - name: List sites
+        run: terminus auth:login