diff --git a/.github/workflows/deployment_test.yml b/.github/workflows/deployment_test.yml
index 46d901cd..c14595e5 100644
--- a/.github/workflows/deployment_test.yml
+++ b/.github/workflows/deployment_test.yml
@@ -51,7 +51,7 @@ jobs:
         uses: SamKirkland/FTP-Deploy-Action@v4.3.5
         with:
           server: files.dice-research.org
-          protocol: ftps
+          protocol: ftps-legacy
           security: strict
           username: ${{ secrets.FTP_USERNAME }}
           password: ${{ secrets.FTP_PASSWORD }}