diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f7007bac..1ae07687 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,7 +66,7 @@ jobs:
         with:
           version: "0.5.x"
       - name: Run tests
-        run: uv run --with pytest-cov pytest ./tests --color=yes --cov anywidget --cov-report xml
+        run: uv run --with pytest-cov pytest ./tests/unit --color=yes --cov anywidget --cov-report xml
         env:
           UV_PYTHON: ${{ matrix.python-version }}
       - uses: codecov/codecov-action@v5
diff --git a/pyproject.toml b/pyproject.toml
index 89b91afb..24560442 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,8 @@ dev-dependencies = [
     "polars>=1.5.0",
     "pandas>=1.3.5",
     "geopandas<1.0",
-    "playwright"
+    "playwright",
+    "pyarrow",
 ]