diff --git a/custom/custom/py.typed b/custom/custom/py.typed
new file mode 100644
index 000000000..e69de29bb
diff --git a/custom/custom/views/swisscom_heatmap/entry.py b/custom/custom/views/swisscom_heatmap/entry.py
index 2c773e049..b9d6ee7d2 100644
--- a/custom/custom/views/swisscom_heatmap/entry.py
+++ b/custom/custom/views/swisscom_heatmap/entry.py
@@ -8,7 +8,7 @@
 from cornice import Service  # type: ignore[import-untyped]
 from geojson import FeatureCollection  # type: ignore[import-untyped]
 
-from .query_swisscom_heatmap_api import SwisscomHeatmapApi
+from custom.views.swisscom_heatmap.query_swisscom_heatmap_api import SwisscomHeatmapApi
 
 LOG = logging.getLogger(__name__)
 
diff --git a/custom/custom/views/swisscom_heatmap/query_swisscom_heatmap_api.py b/custom/custom/views/swisscom_heatmap/query_swisscom_heatmap_api.py
index 88d2ecdce..e166d6d8f 100644
--- a/custom/custom/views/swisscom_heatmap/query_swisscom_heatmap_api.py
+++ b/custom/custom/views/swisscom_heatmap/query_swisscom_heatmap_api.py
@@ -8,7 +8,7 @@
 from pyramid.response import Response  # type: ignore[import-untyped]
 from requests_oauthlib import OAuth2Session  # type: ignore[import-untyped]
 
-from .tile_id_to_coordinates import tile_id_to_ll
+from custom.views.swisscom_heatmap.tile_id_to_coordinates import tile_id_to_ll
 
 LOG = logging.getLogger(__name__)