diff --git a/apps/opm/filters.py b/apps/opm/filters.py
index 0b2ddd05..03ab6d9c 100644
--- a/apps/opm/filters.py
+++ b/apps/opm/filters.py
@@ -1,6 +1,7 @@
 from django_filters import rest_framework as filters
 from apps.opm.models import Operation
 
+
 class OperationFilterset(filters.FilterSet):
     class Meta:
         model = Operation
@@ -9,4 +10,5 @@ class OperationFilterset(filters.FilterSet):
             'area': ['exact'],
             'create_by': ['exact'],
             'create_time': ['gte', 'lte'],
-        }
\ No newline at end of file
+            'cates': ['exact', 'in']
+        }