diff --git a/README.md b/README.md
index f0f62bc..633ca22 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,7 @@ _(scroll right on table to see all 5 columns)_
 | TikTok-Reddit    | https://reddit-tiktok.netlify.app/                                                                                                     | https://github.com/hedgecox/Reddit-TikTok-Clone                                                                        | React                                             | ![GitHub Repo stars](https://img.shields.io/github/stars/hedgecox/Reddit-TikTok-Clone)                                                                                                         |
 | Twitch           | https://twitchclone.vercel.app/                                                                                                        | https://github.com/alissonsleal/twitch-clone/                                                                          | React, Next.JS, Typescript                        | ![GitHub Repo stars](https://img.shields.io/github/stars/alissonsleal/twitch-clone)                                                                                                            |
 | skribbl.io       | http://skribbl-env.eba-4374ebsp.us-east-2.elasticbeanstalk.com/                                                                        | https://github.com/nabinchaulagain/skribbl-clone                                                                       | React, Socket.io, Express                         | ![GitHub Repo stars](https://img.shields.io/github/stars/nabinchaulagain/skribbl-clone)                                                                                                        |
+| Slack            | https://mattermost.com/                                                                                                                | https://github.com/mattermost/mattermost-webapp                                                                        | React                                             | ![GitHub Repo stars](https://img.shields.io/github/stars/mattermost/mattermost-webapp)                                                                                                         |
 | Slack            | https://github.com/calebnance/expo-slack/blob/master/screenshots/screenshare-3_v1.jpg?raw=true                                         | https://github.com/calebnance/expo-slack                                                                               | React Native, Expo                                | ![GitHub Repo stars](https://img.shields.io/github/stars/calebnance/expo-slack)                                                                                                                |
 | Snapchat         | https://towhidkashem.github.io/snapchat-clone/ <br/> https://youtu.be/aRS88v-duKg                                                      | https://github.com/TowhidKashem/snapchat-clone                                                                         | React, Redux, Typescript, Cypress, Jest, Enzyme   | ![GitHub Repo stars](https://img.shields.io/github/stars/TowhidKashem/snapchat-clone)                                                                                                          |
 | Spotify          | https://github.com/JL978/spotify-clone-client/blob/master/demo/Authed.gif                                                              | https://github.com/JL978/spotify-clone-client                                                                          | React                                             | ![GitHub Repo stars](https://img.shields.io/github/stars/JL978/spotify-clone-client)                                                                                                           |