diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4ca9c31a..54507a62 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,10 +14,10 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-      - run: echo "${GITHUB_WORKSPACE}" >> $GITHUB_PATH
-      - run: nix build .#simple-tests --print-build-logs
+      - name: Build and run dev container task
+        uses: devcontainers/ci@v0.3
+        with:
+          runCmd: poetry run pytest -n auto --cov=tested --cov-report=xml tests/
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4
         with: