diff --git a/.all-contributorsrc b/.all-contributorsrc
index d889d22..cc6ccaf 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -19,6 +19,18 @@
         "review",
         "code"
       ]
+    },
+    {
+      "login": "jnnr",
+      "name": "Jann Launer",
+      "avatar_url": "https://avatars.githubusercontent.com/u/32454596?v=4",
+      "profile": "https://github.com/jnnr",
+      "contributions": [
+        "ideas",
+        "code",
+        "doc",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 45286d2..c10e276 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ Thanks goes to these wonderful people, sorted alphabetically ([emoji key](https:
   <tbody>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://orcid.org/0000-0003-2288-6423"><img src="https://avatars.githubusercontent.com/u/72193617?v=4?s=100" width="100px;" alt="Ivan Ruiz Manuel"/><br /><sub><b>Ivan Ruiz Manuel</b></sub></a><br /><a href="https://github.com/modelblocks-org/gregor/pulls?q=is%3Apr+reviewed-by%3Airm-codebase" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/modelblocks-org/gregor/commits?author=irm-codebase" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/jnnr"><img src="https://avatars.githubusercontent.com/u/32454596?v=4?s=100" width="100px;" alt="Jann Launer"/><br /><sub><b>Jann Launer</b></sub></a><br /><a href="#ideas-jnnr" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/modelblocks-org/gregor/commits?author=jnnr" title="Code">💻</a> <a href="https://github.com/modelblocks-org/gregor/commits?author=jnnr" title="Documentation">📖</a> <a href="https://github.com/modelblocks-org/gregor/commits?author=jnnr" title="Tests">⚠️</a></td>
     </tr>
   </tbody>
 </table>