diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 045a3219..e6aefd01 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -10,5 +10,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: DeterminateSystems/nix-installer-action@main
+        with:
+          extra-conf: |
+            experimental-features = no-url-literals
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix flake check