diff --git a/shippo/resource.py b/shippo/resource.py
index 5b9f3e6..f9a5ea3 100644
--- a/shippo/resource.py
+++ b/shippo/resource.py
@@ -281,7 +281,7 @@ class Order(CreateableAPIResource, ListableAPIResource, FetchableAPIResource):
     @classmethod
     def class_url(cls):
         cls_name = cls.class_name()
-        return "%ss/" % (cls_name,)
+        return "v1/%ss/" % (cls_name,)
 
 
 class Parcel(CreateableAPIResource, ListableAPIResource, FetchableAPIResource):