diff --git a/README.md b/README.md
index 7aef943..5321e90 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,10 @@ REST conventions for mobx.
 
 ![](https://media.giphy.com/media/b9QBHfcNpvqDK/giphy.gif)
 
+## TODO
+
+Make API dependency injectable
+
 ## Installation
 
 ```
diff --git a/package.json b/package.json
index 87965e1..e466aeb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobx-rest",
-  "version": "0.0.9",
+  "version": "0.0.10",
   "description": "REST conventions for mobx.",
   "repository": {
     "type": "git",
diff --git a/src/Model.js b/src/Model.js
index 52cd060..1eb84c6 100644
--- a/src/Model.js
+++ b/src/Model.js
@@ -32,6 +32,7 @@ class Model {
   ): Promise<*> {
     let data = Object.assign({}, attributes)
     let originalAttributes = this.attributes.toJS()
+
     if (!this.get('id')) {
       return this.collection.create(attributes, {optimistic})
     }
@@ -39,7 +40,9 @@ class Model {
     const label: Label = 'updating'
 
     if (patch) {
-      data = Object.assign({}, this.attributes.toJS(), attributes)
+      data = Object.assign({}, originalAttributes, attributes)
+    } else {
+      data = attributes
     }
 
     // TODO: use PATCH
diff --git a/test/ModelTest.js b/test/ModelTest.js
index 8be98fc..daaa5e5 100644
--- a/test/ModelTest.js
+++ b/test/ModelTest.js
@@ -71,7 +71,7 @@ describe('Model', () => {
 
       context('and its not patching', () => {
         it('it sets model straight away', () => {
-          model.save({id: item.id, name}, {patch: false})
+          model.save({name}, {patch: false})
           assert.equal(model.get('name'), 'dylan')
           assert.equal(model.get('album'), null)
           assert.equal(model.request.label, 'updating')