diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 019caa07..f54817b0 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -44,6 +44,7 @@ jobs:
           echo DATABASE_URL=postgresql://postgres:postgres@127.0.0.1/postgres >> .env
           echo PGOPTIONS='-c search_path=storage' >> .env
           echo FILE_SIZE_LIMIT=52428800 >> .env
+          echo STORAGE_BACKEND=s3 >> .env
       - name: export docs
         run: |
           npm ci