diff --git a/laborious/utils/repository/opc_repository.py b/laborious/utils/repository/opc_repository.py
index 3ae6c2a..a43e65b 100644
--- a/laborious/utils/repository/opc_repository.py
+++ b/laborious/utils/repository/opc_repository.py
@@ -4,7 +4,7 @@ from pathlib import Path
 from typing import Any
 from asyncua.sync import Client
 from asyncua.crypto.security_policies import SecurityPolicyBasic256
-from asyncua.ua import DataValue, Variant, VariantType
+from asyncua.ua import DataValue, Variant, VariantType, DateTime
 from regex import F
 from sientia_do.notifications.handlers import NotificationHandler
 from sientia_do.notifications.models import NotificationLevel
@@ -239,7 +239,9 @@ class OpcRepository():
         logger.custom_info(
             f'Writing {data} - {type(data)} to {node}', metadata.get('schedule_name', 'N/A'))
         ua_data = DataValue(
-            Variant(data, data_type_map[data_type]['opc_type']))
+            Variant(data, data_type_map[data_type]['opc_type']),
+            SourceTimestamp=DateTime(datetime.now())
+        )
 
         try:
             node.write_value(ua_data)