diff --git a/.all-contributorsrc b/.all-contributorsrc
index ce0c1b69..77c4612b 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -233,6 +233,16 @@
         "code",
         "review"
       ]
+    },
+    {
+      "login": "jezdez",
+      "name": "Jannis Leidel",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1610?v=4",
+      "profile": "https://github.com/jezdez",
+      "contributions": [
+        "code",
+        "review"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index eb30ad96..070efdbc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # <img src="images/logo/logo.png" width=40 /> pyOpenSci Scientific Python Open Source Packaging Guide
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-22-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-23-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/pyopensci/python-package-guide?color=purple&display_name=tag&style=plastic)
@@ -105,6 +105,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://code.scienxlab.org"><img src="https://avatars.githubusercontent.com/u/1692372?v=4?s=100" width="100px;" alt="Matt Hall"/><br /><sub><b>Matt Hall</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=kwinkunks" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Akwinkunks" title="Reviewed Pull Requests">👀</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/jezdez"><img src="https://avatars.githubusercontent.com/u/1610?v=4?s=100" width="100px;" alt="Jannis Leidel"/><br /><sub><b>Jannis Leidel</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=jezdez" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Ajezdez" title="Reviewed Pull Requests">👀</a></td>
     </tr>
   </tbody>
 </table>