diff --git a/.forgejo/workflows/test.yml b/.forgejo/workflows/test.yml
index 1288b00..7dac5d8 100644
--- a/.forgejo/workflows/test.yml
+++ b/.forgejo/workflows/test.yml
@@ -7,7 +7,8 @@ jobs:
     runs-on: docker
     steps:
       - uses: actions/checkout@v3
-      - name: Install Nix
-        uses: https://github.com/DeterminateSystems/nix-installer-action@v4
+      - uses: https://github.com/cachix/install-nix-action@v20
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
       - name: Run `nix build`
         run: nix --version