diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a33e09e..e79231f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,3 +16,9 @@ jobs:
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Build
         run: nix build -L
+      - name: Run from scratch
+        id: run-from-scratch
+        run: |
+          rm meta.json
+          nix run . -- --download-url-prefix https://example.org/
+          cat meta.json