diff --git a/.forgejo/workflows/test.yml b/.forgejo/workflows/test.yml
index 700ff2c..346c8e6 100644
--- a/.forgejo/workflows/test.yml
+++ b/.forgejo/workflows/test.yml
@@ -22,7 +22,14 @@ jobs:
       - uses: rharkor/caching-for-turbo@v1.8
       - name: Run tests
         run: |
-          export HOME=$(mktemp -d) # https://stackoverflow.com/a/78185023/12979111
+          # https://stackoverflow.com/a/78185023/12979111
+          export HOME=$(mktemp -d)
+
+          # https://github.com/NixOS/nix/issues/670#issuecomment-304524165
+          export NIX_STORE_DIR=$HOME/nix/store
+          export NIX_STATE_DIR=$HOME/nix/var/nix
+          export NIX_LOG_DIR=$HOME/nix/var/log/nix
+
           devenv shell pnpm install
           devenv shell pnpm lint
           devenv shell pnpm build