diff --git a/tests/test_datasets/test_fapar_lai.py b/tests/test_datasets/test_fapar_lai.py
index 44112aa..52e6bf7 100644
--- a/tests/test_datasets/test_fapar_lai.py
+++ b/tests/test_datasets/test_fapar_lai.py
@@ -100,6 +100,7 @@ def test_ingest(self, dummy_dir):
         with xr.open_mfdataset((ingest_dir / "fapar-lai").glob("*.nc")) as ds:
             assert isinstance(ds, xr.Dataset)
 
+    @pytest.mark.slow  # depends on ingested data being available
     def test_load(self):
         """Test load function."""
         times = TimeBounds(np.datetime64("2019-01-01"), np.datetime64("2019-01-31"))
@@ -123,6 +124,7 @@ def test_load(self):
         np.testing.assert_allclose(ds.latitude.values, expected_lat)
         np.testing.assert_allclose(ds.longitude.values, expected_lon)
 
+    @pytest.mark.slow  # depends on ingested data being available
     def test_convert(self):
         """Test convert function."""
         lai_dataset = FaparLAI()