diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 123a443..ad28c16 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,6 +29,11 @@ jobs:
           tar --exclude=.git --exclude=node_modules --exclude=.next \
               --exclude=.deploy-stage -cf - . | (cd .deploy-stage && tar xf -)
 
+      - name: Probe FTP server
+        run: |
+          curl -sv --user "${{ secrets.FTP_USER }}:${{ secrets.FTP_PASS }}" \
+            "ftp://82.165.141.176/dev.karlderheinz.tv/" 2>&1 | tail -30 || true
+
       - name: Upload source to server (FTP)
         uses: SamKirkland/FTP-Deploy-Action@4.2.0
         with: