diff --git a/service/admin.py b/service/admin.py
index 4a99cc5..bf33323 100644
--- a/service/admin.py
+++ b/service/admin.py
@@ -11,6 +11,8 @@ from service.models import Post_and_pvz, Post_and_pvzCategory, Post_and_pvzGroup
     OtherObjectsCategory
 from service.models import PlacementPointPVZDistance, TaskStatus
 from postamates.settings import DEBUG
+from django.core.cache import cache
+
 
 
 class MyAdminSite(AdminSite):
@@ -39,10 +41,18 @@ class TaskStatusAdmin(admin.ModelAdmin):
 class CategoryAdmin(admin.ModelAdmin):
     list_display = ('name', 'visible')
 
+    def save_model(self, request, obj, form, change):
+        obj.save()
+        cache.clear()
+
 
 class GroupAdmin(admin.ModelAdmin):
     list_display = ('name', 'category', 'visible')
 
+    def save_model(self, request, obj, form, change):
+        obj.save()
+        cache.clear()
+
 
 class PlacementPointAdmin(admin.ModelAdmin):
     pass
diff --git a/service/models.py b/service/models.py
index 874aff4..6b4b70b 100644
--- a/service/models.py
+++ b/service/models.py
@@ -1,11 +1,8 @@
 from django.contrib.auth.models import User
 from django.contrib.gis.db import models as gis_models
 from django.db import models
-from django.db.models.signals import post_save, post_delete
-from django.dispatch import receiver
 from postamates.settings import SRID
 from service.enums import PointStatus
-from django.core.cache import cache
 
 User._meta.get_field('email')._unique = True
 
@@ -217,23 +214,3 @@ class LastMLCall(models.Model):
 
 class TempFiles(models.Model):
     data = models.TextField(blank=False, null=False)
-
-
-@receiver([post_save, post_delete], sender=Post_and_pvzCategory)
-def clear_cache(sender, instance, **kwargs):
-    cache.clear()
-
-
-@receiver([post_save, post_delete], sender=Post_and_pvzGroup)
-def clear_cache(sender, instance, **kwargs):
-    cache.clear()
-
-
-@receiver([post_save, post_delete], sender=OtherObjectsCategory)
-def clear_cache(sender, instance, **kwargs):
-    cache.clear()
-
-
-@receiver([post_save, post_delete], sender=OtherObjectsGroup)
-def clear_cache(sender, instance, **kwargs):
-    cache.clear()
\ No newline at end of file