diff --git a/.forgejo/workflows/test.yaml b/.forgejo/workflows/test.yaml
index 185132c..dd7c72d 100644
--- a/.forgejo/workflows/test.yaml
+++ b/.forgejo/workflows/test.yaml
@@ -15,10 +15,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: 'main'
-      - name: direnv
-        run: direnv allow
-      - name: treefmt
-        run: |
-          echo "##[group]direnv/treefmt"
-          direnv allow
-          treefmt
+      - name: dev
+        uses: actions/nix/develop@main
+        with:
+          flake: .
+          run: |
+            direnv allow
+            treefmt