diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 43a6d59c..f56a2529 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -2,6 +2,7 @@
 commit = True
 tag = True
 current_version = 3.8.0
+message = Bump version: {current_version} → {new_version} [skip ci]
 
 [bumpversion:file:setup.py]
 search = version="{current_version}"
diff --git a/nowcasting_dataset/data_sources/data_source.py b/nowcasting_dataset/data_sources/data_source.py
index d4760e70..2ccf18ed 100644
--- a/nowcasting_dataset/data_sources/data_source.py
+++ b/nowcasting_dataset/data_sources/data_source.py
@@ -445,8 +445,8 @@ def get_example(self, location: SpaceTimeLocation) -> xr.Dataset:
             x_center_osgb=x_center_osgb, y_center_osgb=y_center_osgb
         )
         selected_data = selected_data.sel(
-            x_osgb=slice(bounding_box.left, bounding_box.right),
-            y_osgb=slice(bounding_box.top, bounding_box.bottom),
+            x_osgb=slice(int(bounding_box.left), int(bounding_box.right)),
+            y_osgb=slice(int(bounding_box.top), int(bounding_box.bottom)),
         )
 
         # selected_sat_data is likely to have 1 too many pixels in x and y