diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # JaxPM
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-3-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-4-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 JAX-powered Cosmological Particle-Mesh N-body Solver
 
@@ -37,6 +37,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="http://flanusse.net"><img src="https://avatars.githubusercontent.com/u/861591?v=4?s=100" width="100px;" alt="Francois Lanusse"/><br /><sub><b>Francois Lanusse</b></sub></a><br /><a href="#ideas-EiffL" title="Ideas, Planning, & Feedback">🤔</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/dlanzieri"><img src="https://avatars.githubusercontent.com/u/72620117?v=4?s=100" width="100px;" alt="Denise Lanzieri"/><br /><sub><b>Denise Lanzieri</b></sub></a><br /><a href="https://github.com/DifferentiableUniverseInitiative/JaxPM/commits?author=dlanzieri" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ASKabalan"><img src="https://avatars.githubusercontent.com/u/83787080?v=4?s=100" width="100px;" alt="Wassim KABALAN"/><br /><sub><b>Wassim KABALAN</b></sub></a><br /><a href="https://github.com/DifferentiableUniverseInitiative/JaxPM/commits?author=ASKabalan" title="Code">💻</a> <a href="#infra-ASKabalan" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="https://github.com/DifferentiableUniverseInitiative/JaxPM/pulls?q=is%3Apr+reviewed-by%3AASKabalan" title="Reviewed Pull Requests">👀</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/hsimonfroy"><img src="https://avatars.githubusercontent.com/u/85559558?v=4?s=100" width="100px;" alt="Hugo Simon-Onfroy"/><br /><sub><b>Hugo Simon-Onfroy</b></sub></a><br /><a href="https://github.com/DifferentiableUniverseInitiative/JaxPM/commits?author=hsimonfroy" title="Code">💻</a></td>
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