diff --git a/README.md b/README.md
index 17f1a48..ee449ab 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ RestClient.GetArray<Post>(api + "/posts").Then(response => {
   return RestClient.GetArray<User>(api + "/users");
 }).Then(response => {
   EditorUtility.DisplayDialog ("Success", JsonHelper.ArrayToJson<User>(response, true), "Ok");
-}).Catch(err => EditorUtility.DisplayDialog ("Error", err.Message, "Ok"));
+}).Catch((RequestException err) => EditorUtility.DisplayDialog ("Error", err.Message, "Ok"));
 ```
 
 ## Features 🎮
@@ -51,7 +51,7 @@ RestClient.GetArray<Post>(api + "/posts").Then(response => {
 - Automatic transforms for **JSON Arrays**.
 - Supports default **HTTP** Methods **(GET, POST, PUT, DELETE, HEAD, PATCH)**
 - Generic **REQUEST** method to create any http request
-- Based on **Promises** for a better asynchronous programming. Learn about Promises [here](https://github.com/Real-Serious-Games/C-Sharp-Promise)!
+- Based on **Promises** for a better asynchronous programming. Learn about Promises [here](https://github.com/timcassell/ProtoPromise)!
 - Utility to work during scene transition
 - Handle HTTP exceptions and retry requests easily
 - Open Source 🦄
@@ -80,7 +80,7 @@ Do you want to see this beautiful package in action? Download the demo [here](ht
 Download and install the **.unitypackage** file of the latest release published [here](https://github.com/proyecto26/RestClient/releases).
 
 ### UPM package
-Make sure you had installed [C# Promise package](https://openupm.com/packages/com.rsg.promise/) or at least have it in your [openupm scope registry](https://openupm.com/). Then install **RestClient package** using this URL from **Package Manager**: `https://github.com/proyecto26/RestClient.git#upm`
+Make sure you had installed [ProtoPromise package](https://openupm.com/packages/com.timcassell.protopromise/) or at least have it in your [openupm scope registry](https://openupm.com/). Then install **RestClient package** using this URL from **Package Manager**: `https://github.com/proyecto26/RestClient.git#upm`
 
 ### NuGet package
 Other option is download this package from **NuGet** with **Visual Studio** or using the **nuget-cli**, a **[NuGet.config](https://github.com/proyecto26/RestClient/blob/master/demo/NuGet.config)** file is required at the root of your **Unity Project**, for example:
@@ -164,7 +164,7 @@ RestClient.Request(new RequestHelper {
   AssetBundle assetBundle = ((DownloadHandlerAssetBundle)response.Request.downloadHandler).assetBundle;
 
   EditorUtility.DisplayDialog("Status", response.StatusCode.ToString(), "Ok");
-}).Catch(err => {
+}).Catch((RequestException err) => {
   var error = err as RequestException;
   EditorUtility.DisplayDialog("Error Response", error.Response, "Ok");
 });
@@ -182,7 +182,7 @@ RestClient.Get(new RequestHelper {
   AudioSource audio = GetComponent<AudioSource>();
   audio.clip = ((DownloadHandlerAudioClip)res.Request.downloadHandler).audioClip;
   audio.Play();
-}).Catch(err => {
+}).Catch((RequestException err) => {
   EditorUtility.DisplayDialog ("Error", err.Message, "Ok");
 });
 ```
@@ -319,6 +319,7 @@ router.post('/', function(req, res) {
 ```
 
 ## Credits 👍
+* **ProtoPromise** [Robust and efficient library for management of asynchronous operations.](https://github.com/timcassell/ProtoPromise)
 * **C-Sharp-Promise:** [Promises library for C# for management of asynchronous operations.](https://github.com/Real-Serious-Games/C-Sharp-Promise)
 * **MyAPI:** [A template to create awesome APIs easily ⚡️](https://github.com/proyecto26/MyAPI)