diff --git a/.all-contributorsrc b/.all-contributorsrc
index cde30e581..c6e662b72 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -18,6 +18,18 @@
         "test",
         "infra"
       ]
+    },
+    {
+      "login": "spirosChv",
+      "name": "Spiros Chavlis",
+      "avatar_url": "https://avatars.githubusercontent.com/u/10776251?v=4",
+      "profile": "https://www.dendrites.gr",
+      "contributions": [
+        "code",
+        "content",
+        "test",
+        "infra"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 12fd7573c..c80c00119 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # NeuroMatch Academy (NMA) Computational Neuroscience syllabus
 <!-- 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](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 *July 10-28, 2023*
@@ -43,6 +43,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   <tbody>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ebatty"><img src="https://avatars.githubusercontent.com/u/8988527?v=4?s=100" width="100px;" alt="Ella Batty"/><br /><sub><b>Ella Batty</b></sub></a><br /><a href="https://github.com/NeuromatchAcademy/course-content/commits?author=ebatty" title="Code">💻</a> <a href="#content-ebatty" title="Content">🖋</a> <a href="https://github.com/NeuromatchAcademy/course-content/commits?author=ebatty" title="Tests">⚠️</a> <a href="#infra-ebatty" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://www.dendrites.gr"><img src="https://avatars.githubusercontent.com/u/10776251?v=4?s=100" width="100px;" alt="Spiros Chavlis"/><br /><sub><b>Spiros Chavlis</b></sub></a><br /><a href="https://github.com/NeuromatchAcademy/course-content/commits?author=spirosChv" title="Code">💻</a> <a href="#content-spirosChv" title="Content">🖋</a> <a href="https://github.com/NeuromatchAcademy/course-content/commits?author=spirosChv" title="Tests">⚠️</a> <a href="#infra-spirosChv" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
     </tr>
   </tbody>
 </table>