diff --git a/.all-contributorsrc b/.all-contributorsrc
index 963256650d..4366246007 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -950,6 +950,16 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "pipliggins",
+      "name": "Pip Liggins",
+      "avatar_url": "https://avatars.githubusercontent.com/u/55396775?v=4",
+      "profile": "https://github.com/pipliggins",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 1a0f8b4b9b..a904e5a67c 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/pybamm-team/PyBaMM/badge)](https://scorecard.dev/viewer/?uri=github.com/pybamm-team/PyBaMM)
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-89-orange.svg)](#-contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-90-orange.svg)](#-contributors)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 </div>
diff --git a/all_contributors.md b/all_contributors.md
index 3cc69655e0..9bb1e373d5 100644
--- a/all_contributors.md
+++ b/all_contributors.md
@@ -119,6 +119,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/smitasahu2"><img src="https://avatars.githubusercontent.com/u/57876346?v=4?s=100" width="100px;" alt="Smita Sahu"/><br /><sub><b>Smita Sahu</b></sub></a><br /><a href="https://github.com/pybamm-team/PyBaMM/commits?author=smitasahu2" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/Ubham16"><img src="https://avatars.githubusercontent.com/u/173074476?v=4?s=100" width="100px;" alt="Ubham16"/><br /><sub><b>Ubham16</b></sub></a><br /><a href="https://github.com/pybamm-team/PyBaMM/commits?author=Ubham16" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/MehrdadBabazadeh"><img src="https://avatars.githubusercontent.com/u/30574522?v=4?s=100" width="100px;" alt="Mehrdad Babazadeh"/><br /><sub><b>Mehrdad Babazadeh</b></sub></a><br /><a href="https://github.com/pybamm-team/PyBaMM/commits?author=MehrdadBabazadeh" title="Code">💻</a> <a href="https://github.com/pybamm-team/PyBaMM/commits?author=MehrdadBabazadeh" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/pipliggins"><img src="https://avatars.githubusercontent.com/u/55396775?v=4?s=100" width="100px;" alt="Pip Liggins"/><br /><sub><b>Pip Liggins</b></sub></a><br /><a href="https://github.com/pybamm-team/PyBaMM/commits?author=pipliggins" title="Code">💻</a> <a href="https://github.com/pybamm-team/PyBaMM/commits?author=pipliggins" title="Tests">⚠️</a></td>
     </tr>
   </tbody>
 </table>