diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7011991ecb9..c3eab956b04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ### Master
 
+- [#3550](https://github.com/emberjs/data/pull/3550) JSONSerializer now works with EmbeddedRecordsMixin by respecting the `included` property in normalizeResponse [@tstirrat](https://github.com/tstirrat)
+
 ### Release 1.13.5 (July 8, 2015)
 
 - [#3437](https://github.com/emberjs/data/pull/3437) Deprecate normalizePayload and normalizeHash [@wecc](https://github.com/wecc)
@@ -122,9 +124,9 @@
 
 ##### Store Service moved to an Instance Initializer
 
-In order to fix deprecations warning induced by Ember 1.12, the store service 
-is now injected as an instanceInitializer. As a consequence, if you had initializers 
-depending on the store, you should move them to an instance initializer as well, 
+In order to fix deprecations warning induced by Ember 1.12, the store service
+is now injected as an instanceInitializer. As a consequence, if you had initializers
+depending on the store, you should move them to an instance initializer as well,
 and mark it as after: 'ember-data'.
 
 - Removed support for DS.FixtureAdapter. You can use it as an addon, or
diff --git a/packages/ember-data/lib/serializers/json-serializer.js b/packages/ember-data/lib/serializers/json-serializer.js
index f4800b003dc..1046680d94a 100644
--- a/packages/ember-data/lib/serializers/json-serializer.js
+++ b/packages/ember-data/lib/serializers/json-serializer.js
@@ -449,11 +449,13 @@ var JSONSerializer = Serializer.extend({
     }
 
     if (isSingle) {
-      let { data } = this.normalize(primaryModelClass, payload);
+      let { data, included } = this.normalize(primaryModelClass, payload);
       documentHash.data = data;
+      documentHash.included = included;
     } else {
       documentHash.data = payload.map((item) => {
-        let { data } = this.normalize(primaryModelClass, item);
+        let { data, included } = this.normalize(primaryModelClass, item);
+        documentHash.included.push(...included);
         return data;
       });
     }
diff --git a/packages/ember-data/tests/integration/serializers/json-serializer-test.js b/packages/ember-data/tests/integration/serializers/json-serializer-test.js
index a92292d3e08..972ae1c4c6a 100644
--- a/packages/ember-data/tests/integration/serializers/json-serializer-test.js
+++ b/packages/ember-data/tests/integration/serializers/json-serializer-test.js
@@ -635,3 +635,59 @@ test('normalizeResponse should extract meta using extractMeta', function() {
 
   deepEqual(post.meta.authors, ['Tomster', 'Tomhuda']);
 });
+
+test('normalizeResponse respects `included` items (single response)', function() {
+  env.registry.register("serializer:post", DS.JSONSerializer.extend(DS.EmbeddedRecordsMixin, {
+    attrs: {
+      comments: { embedded: 'always' }
+    }
+  }));
+
+  var jsonHash = {
+    id: "1",
+    title: "Rails is omakase",
+    comments: [
+      { id: "1", body: "comment 1" },
+      { id: "2", body: "comment 2" }
+    ]
+  };
+
+  var post = env.store.serializerFor("post").normalizeResponse(env.store, Post, jsonHash, '1', 'findRecord');
+
+  deepEqual(post.included, [
+    { id: "1", type: "comment", attributes: { body: "comment 1" }, relationships: {} },
+    { id: "2", type: "comment", attributes: { body: "comment 2" }, relationships: {} }
+  ]);
+});
+
+test('normalizeResponse respects `included` items (array response)', function() {
+  env.registry.register("serializer:post", DS.JSONSerializer.extend(DS.EmbeddedRecordsMixin, {
+    attrs: {
+      comments: { embedded: 'always' }
+    }
+  }));
+
+  var payload = [{
+    id: "1",
+    title: "Rails is omakase",
+    comments: [
+      { id: "1", body: "comment 1" }
+    ]
+  },
+  {
+    id: "2",
+    title: "Post 2",
+    comments: [
+      { id: "2", body: "comment 2" },
+      { id: "3", body: "comment 3" }
+    ]
+  }];
+
+  var post = env.store.serializerFor("post").normalizeResponse(env.store, Post, payload, '1', 'findAll');
+
+  deepEqual(post.included, [
+    { id: "1", type: "comment", attributes: { body: "comment 1" }, relationships: {} },
+    { id: "2", type: "comment", attributes: { body: "comment 2" }, relationships: {} },
+    { id: "3", type: "comment", attributes: { body: "comment 3" }, relationships: {} }
+  ]);
+});