diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index b3bcd1c3..8735274e 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -961,9 +961,20 @@ class MlogbwViewSet(CustomModelViewSet):
     @transaction.atomic
     def perform_update(self, serializer):
         mlogbw = serializer.save()
-        Mlogbw.cal_count_notok(mlogbw.mlogb)
-        mlog = mlogbw.mlogb.mlog
-        mlog.cal_mlog_count_from_mlogb()
+        if isinstance(mlogbw, list):
+            pass
+        else:
+            Mlogbw.cal_count_notok(mlogbw.mlogb)
+            mlog = mlogbw.mlogb.mlog
+            mlog.cal_mlog_count_from_mlogb()
+    
+    def after_bulk_update(self, objs):
+        mlogbIds = list(set([obj.mlogb for obj in objs]))
+        for mlogbId in mlogbIds:
+            mlogbw = Mlogbw.objects.get(id=mlogbId)
+            Mlogbw.cal_count_notok(mlogbw.mlogb)
+            mlog = mlogbw.mlogb.mlog
+            mlog.cal_mlog_count_from_mlogb()
 
     @transaction.atomic
     def perform_destroy(self, instance:Mlogbw):