diff --git a/pynetbox/core/response.py b/pynetbox/core/response.py
index 824bd6a3..cd00ff36 100644
--- a/pynetbox/core/response.py
+++ b/pynetbox/core/response.py
@@ -23,7 +23,7 @@
 from pynetbox.core.util import Hashabledict
 
 # List of fields that are lists but should be treated as sets.
-LIST_AS_SET = ("tags", "tagged_vlans")
+LIST_AS_SET = ("tags", "tagged_vlans", "object_types")
 
 
 def get_return(lookup, return_fields=None):