diff --git a/tests/conftest.py b/tests/conftest.py
index ae3e8c69..55ad79fb 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -11,7 +11,7 @@
 
 # Define a URL to the xdem-data repository's test data
 _TESTDATA_REPO_URL = "https://github.com/vschaffn/xdem-data/tarball/2-richdem_gdal"
-_COMMIT_HASH = "ca9d7e34294cf57c00cea4adbf4ee634a63e20d7"
+_COMMIT_HASH = "31a7159c982cec4b352f0de82bd4e0be61db3afe"
 
 
 def download_test_data(overwrite: bool = False) -> None:
diff --git a/tests/test_terrain.py b/tests/test_terrain.py
index c9185c7c..52ce4088 100644
--- a/tests/test_terrain.py
+++ b/tests/test_terrain.py
@@ -143,18 +143,6 @@ def test_attribute_functions_against_richdem(self, attribute: str, get_test_data
             "planform_curvature": lambda dem: xdem.terrain.planform_curvature(dem.data, resolution=dem.res),
         }
 
-        # Functions for RichDEM wrapper methods
-        # functions_richdem = {
-        #     "slope_Horn": lambda dem: get_terrain_attribute_richdem(dem, attribute="slope", degrees=True),
-        #     "aspect_Horn": lambda dem: get_terrain_attribute_richdem(dem, attribute="aspect", degrees=True),
-        #     "hillshade_Horn": lambda dem: get_terrain_attribute_richdem(dem, attribute="hillshade"),
-        #     "curvature": lambda dem: get_terrain_attribute_richdem(dem, attribute="curvature"),
-        #     "profile_curvature": lambda dem: get_terrain_attribute_richdem(dem, attribute="profile_curvature"),
-        #     "planform_curvature": lambda dem: get_terrain_attribute_richdem(
-        #         dem, attribute="planform_curvature", degrees=True
-        #     ),
-        # }
-
         # Copy the DEM to ensure that the inter-test state is unchanged, and because the mask will be modified.
         dem = self.dem.copy()
 
@@ -162,7 +150,6 @@ def test_attribute_functions_against_richdem(self, attribute: str, get_test_data
         attr_xdem = gu.raster.get_array_and_mask(functions_xdem[attribute](dem))[0].squeeze()
         attr_richdem_rst = gu.Raster(get_test_data_path(os.path.join("richdem", f"{attribute}.tif")), load_data=True)
         attr_richdem = gu.raster.get_array_and_mask(attr_richdem_rst)[0].squeeze()
-        # attr_richdem = gu.raster.get_array_and_mask(functions_richdem[attribute](dem))[0].squeeze()
 
         # We compute the difference and keep only valid values
         diff = attr_xdem - attr_richdem