diff --git a/environment.yaml b/environment.yaml
index a9c53347..39e85c49 100644
--- a/environment.yaml
+++ b/environment.yaml
@@ -41,7 +41,7 @@ dependencies:
   - fiona
   - proj
   - pyshp
-  - geopandas<=0.6.3
+  - geopandas
   - rasterio
   - shapely
   - libgdal
diff --git a/scripts/build_bus_regions.py b/scripts/build_bus_regions.py
index 8232a6f3..14314de3 100644
--- a/scripts/build_bus_regions.py
+++ b/scripts/build_bus_regions.py
@@ -88,7 +88,7 @@ if __name__ == "__main__":
                 'y': offshore_locs['y'],
                 'geometry': voronoi_partition_pts(offshore_locs.values, offshore_shape),
                 'country': country
-            }, index=offshore_locs.index)
+            })
         offshore_regions_c = offshore_regions_c.loc[offshore_regions_c.area > 1e-2]
         offshore_regions.append(offshore_regions_c)
 
@@ -98,6 +98,6 @@ if __name__ == "__main__":
         schema = {**gpd.io.file.infer_schema(s), 'geometry': 'Unknown'}
         s.to_file(fn, driver='GeoJSON', schema=schema)
 
-    save_to_geojson(pd.concat(onshore_regions), snakemake.output.regions_onshore)
+    save_to_geojson(pd.concat(onshore_regions, ignore_index=True), snakemake.output.regions_onshore)
 
-    save_to_geojson(pd.concat(offshore_regions), snakemake.output.regions_offshore)
+    save_to_geojson(pd.concat(offshore_regions, ignore_index=True), snakemake.output.regions_offshore)