diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e1a11628..c15a3473 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -54,6 +54,7 @@ jobs:
           create-args: >-
             python=${{ matrix.python-version }}
 
+      # To prevent issues where Windows will re-use old/cached versions of RDKit
       - name: Update rdkit version
         run: |
           micromamba install --force-reinstall rdkit=2024.03.4
diff --git a/tests/test_datamodule.py b/tests/test_datamodule.py
index 9edb24e1..18e90b79 100644
--- a/tests/test_datamodule.py
+++ b/tests/test_datamodule.py
@@ -380,7 +380,7 @@ def test_datamodule_multiple_data_files(self):
 
         self.assertEqual(len(ds.train_ds), 20)
 
-    def test_splits_file(self):
+    def test_splits_file(self, tmp_path):
         # Test single CSV files
         csv_file = "tests/data/micro_ZINC_shard_1.csv"
         df = pd.read_csv(csv_file)
@@ -424,7 +424,7 @@ def test_splits_file(self):
         self.assertEqual(len(ds.test_ds), len(split_test))
 
         # Create a TemporaryFile to save the splits, and test the datamodule
-        with tempfile.NamedTemporaryFile(suffix=".pt") as temp:
+        with tempfile.NamedTemporaryFile(suffix=".pt", dir=tmp_path) as temp:
             # Save the splits
             torch.save(splits, temp)