diff --git a/dist/alchemy-json_api.js b/dist/alchemy-json_api.js
index 3123e91..9d4500a 100644
--- a/dist/alchemy-json_api.js
+++ b/dist/alchemy-json_api.js
@@ -11,7 +11,7 @@ var structuredClone__default = /*#__PURE__*/_interopDefaultLegacy(structuredClon
 function deserialize(originalResponse) {
   var response = structuredClone__default["default"](originalResponse);
 
-  var included = response.included || [];
+  var included = response?.included || [];
 
   if (Array.isArray(response.data)) {
     return response.data.map(function (data) {
diff --git a/src/deserialize.js b/src/deserialize.js
index a1edacc..5548744 100644
--- a/src/deserialize.js
+++ b/src/deserialize.js
@@ -6,7 +6,7 @@ export function deserialize(originalResponse, options = {}) {
     options = {}
   }
 
-  const included = response.included || []
+  const included = response?.included || []
 
   if (Array.isArray(response.data)) {
     return response.data.map((data) => {