diff --git a/modules/automation/automation.py b/modules/automation/automation.py
index 2b8838d..3fe7000 100644
--- a/modules/automation/automation.py
+++ b/modules/automation/automation.py
@@ -249,8 +249,8 @@ class AutomationDocument(ModelSQL, ModelView, Workflow):
                                     "bags": int(lot.lot_qt),
                                     "surveyor_code": sh[0].controller.get_alf(),
                                     "place_key": sh[0].to_location.get_places(),
-                                    "report_date": wr.report_date,
-                                    "weight_date": wr.weight_date,
+                                    "report_date": wr.report_date.isoformat(),
+                                    "weight_date": wr.weight_date.isoformat(),
                                     "agent": sh[0].agent.get_alf()
                                 }
                                 logger.info("PAYLOAD:%s",wr_payload)