diff --git a/dispatch/urls.py b/dispatch/urls.py
index 792972c..604b056 100644
--- a/dispatch/urls.py
+++ b/dispatch/urls.py
@@ -6,8 +6,8 @@ from dispatch.views import (DispatcherActionDetail, DispatcherActionList, Dispat
 
 urlpatterns = [
     path('api/dispatchers/', DispatcherList.as_view(), name='dispatch_api_dispatchers'),
-    path('api/dispatchers/<pk>/', DispatcherDetail.as_view(), name='dispatch_api_dispatcher_detail'),
-    path('api/dispatchers/<pk>/message', DispatchMessage.as_view(), name='dispatch_api_dispatch_message'),
+    path('api/dispatchers/<int:pk>/', DispatcherDetail.as_view(), name='dispatch_api_dispatcher_detail'),
+    path('api/dispatchers/<int:pk>/message', DispatchMessage.as_view(), name='dispatch_api_dispatch_message'),
     path('api/dispatchers/<key>/', DispatcherDetailByKey.as_view(), name='dispatch_api_dispatcher_detail'),
     path('api/dispatchers/<key>/message', DispatchMessageByKey.as_view(), name='dispatch_api_dispatch_message'),