diff --git a/.all-contributorsrc b/.all-contributorsrc
index 8b3859ee..fc25ebf5 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -14,6 +14,26 @@
         "code",
         "design"
       ]
+    },
+    {
+      "login": "jacobaustin123",
+      "name": "Jacob Austin",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/28993550?v=4",
+      "profile": "https://jacobaustin123.github.io/",
+      "contributions": [
+        "code",
+        "design",
+        "doc"
+      ]
+    },
+    {
+      "login": "ludkinm",
+      "name": "Matt Ludkin",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/28777642?v=4",
+      "profile": "http://lancaster.ac.uk/~ludkinm/",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 015cdab4..a11b006b 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # AutoPPL
-<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
-<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 [![Build Status](https://travis-ci.org/JamesYang007/autoppl.svg?branch=master)](https://travis-ci.org/JamesYang007/autoppl)
 [![Coverage Status](https://coveralls.io/repos/github/JamesYang007/autoppl/badge.svg?branch=master)](https://coveralls.io/github/JamesYang007/autoppl?branch=master)
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ## Table of Contents
 
@@ -421,22 +421,20 @@ auto res = ppl::nuts(model, config);
 
 ## Contributors
 
-| **James Yang** | **Jacob Austin** | **Jenny Chen** | **Lucie Le Blanc** |
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
 <!-- prettier-ignore-start -->
 <!-- markdownlint-disable -->
 <table>
   <tr>
     <td align="center"><a href="https://github.com/lucieleblanc"><img src="https://avatars3.githubusercontent.com/u/14223323?v=4" width="100px;" alt=""/><br /><sub><b>lucieleblanc</b></sub></a><br /><a href="https://github.com/JamesYang007/autoppl/commits?author=lucieleblanc" title="Code">💻</a> <a href="#design-lucieleblanc" title="Design">🎨</a></td>
+    <td align="center"><a href="https://jacobaustin123.github.io/"><img src="https://avatars0.githubusercontent.com/u/28993550?v=4" width="100px;" alt=""/><br /><sub><b>Jacob Austin</b></sub></a><br /><a href="https://github.com/JamesYang007/autoppl/commits?author=jacobaustin123" title="Code">💻</a> <a href="#design-jacobaustin123" title="Design">🎨</a> <a href="https://github.com/JamesYang007/autoppl/commits?author=jacobaustin123" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://lancaster.ac.uk/~ludkinm/"><img src="https://avatars3.githubusercontent.com/u/28777642?v=4" width="100px;" alt=""/><br /><sub><b>Matt Ludkin</b></sub></a><br /><a href="https://github.com/JamesYang007/autoppl/commits?author=ludkinm" title="Code">💻</a></td>
   </tr>
 </table>
 
 <!-- markdownlint-enable -->
 <!-- prettier-ignore-end -->
 <!-- ALL-CONTRIBUTORS-LIST:END -->
-| :---: | :---: | :---: | :---: |
-| [![JamesYang007](https://avatars3.githubusercontent.com/u/5008832?s=150&v=4)](https://github.com/JamesYang007) | [![jacobaustin123](https://avatars1.githubusercontent.com/u/28993550?s=150&u=151a97ac00d11e39ab3c0dbb8920dad934177d06&v=4)](https://github.com/jacobaustin123) | [![jenchen1398](https://avatars2.githubusercontent.com/u/13106682?s=150&u=926a625662c64366b66355dbdfc7b02f21dd4c91&v=4)](https://github.com/jenchen1398) | [![lucieleblanc](https://avatars1.githubusercontent.com/u/14223323?s=20&v=4)](https://github.com/lucieleblanc) |
-| <a href="http://github.com/JamesYang007" target="_blank">`github.com/JamesYang007`</a> | <a href="https://github.com/jacobaustin123" target="_blank">`github.com/jacobaustin123`</a> | <a href="https://github.com/jenchen1398" target="_blank">`github.com/jenchen1398`</a> | <a href="https://github.com/lucieleblanc" target="_blank">`github.com/lucieleblanc`</a> |
 
 ## Third Party Tools