diff --git a/django_geosource/models.py b/django_geosource/models.py
index d85695f..466208b 100644
--- a/django_geosource/models.py
+++ b/django_geosource/models.py
@@ -1,4 +1,6 @@
 import json
+import sys
+from io import BytesIO
 from datetime import datetime, timedelta
 from enum import Enum, IntEnum, auto
 
@@ -6,6 +8,7 @@
 import psycopg2
 import pyexcel
 from celery.result import AsyncResult
+from celery.utils.log import LoggingProxy
 from django.conf import settings
 from django.contrib.gis.gdal.error import GDALException
 from django.contrib.gis.geos import GEOSGeometry
@@ -400,6 +403,18 @@ class CommandSource(Source):
     def refresh_data(self):
         layer = self.get_layer()
         begin_date = datetime.now()
+
+        try:
+            # wheter we are in a celery task ?
+            if isinstance(sys.stdout, LoggingProxy):
+                # Hack to be able to launch command with mondrian logging
+                sys.stdout.buffer = BytesIO()
+                sys.stdout.encoding = None
+                sys.stderr.buffer = BytesIO()
+                sys.stderr.encoding = None
+        except AttributeError:
+            pass
+
         call_command(self.command)
 
         self.clear_features(layer, begin_date)
diff --git a/django_geosource/tasks.py b/django_geosource/tasks.py
index 907b3f9..17046a3 100644
--- a/django_geosource/tasks.py
+++ b/django_geosource/tasks.py
@@ -29,7 +29,10 @@ def run_model_object_method(self, app, model, pk, method, success_state=states.S
 
     try:
         obj = Model.objects.get(pk=pk)
+
+        logger.info(f"Call method {method} on {obj}")
         state = {"action": method, **getattr(obj, method)()}
+        logger.info(f"Method {method} on {obj} ended")
 
         self.update_state(state=success_state, meta=state)
 
diff --git a/django_geosource/views.py b/django_geosource/views.py
index 6ca138f..a9e288d 100644
--- a/django_geosource/views.py
+++ b/django_geosource/views.py
@@ -41,7 +41,9 @@ def refresh(self, request, pk):
 
         source = self.get_object()
 
-        refresh_job = source.run_async_method("refresh_data")
+        force_refresh = request.query_params.get("force")
+
+        refresh_job = source.run_async_method("refresh_data", force=force_refresh)
         if refresh_job:
             return Response(data=source.get_status(), status=status.HTTP_202_ACCEPTED)