diff --git a/.all-contributorsrc b/.all-contributorsrc
new file mode 100644
index 00000000..f6c9bd68
--- /dev/null
+++ b/.all-contributorsrc
@@ -0,0 +1,29 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "theosanderson",
+      "name": "Theo Sanderson",
+      "avatar_url": "https://avatars.githubusercontent.com/u/19732295?v=4",
+      "profile": "http://theo.io",
+      "contributions": [
+        "code",
+        "doc",
+        "design",
+        "ideas",
+        "infra",
+        "maintenance"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "taxonium",
+  "projectOwner": "theosanderson",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true
+}
diff --git a/README.md b/README.md
index a3ee20c2..ec7926bf 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # Taxonium
+<!-- 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-BADGE:END -->
 
 Taxonium is a tool for exploring trees.
 
@@ -47,6 +50,19 @@ Taxonium now consists of a number of components:
 ## Contributors
 
 Taxonium is built and maintained by Theo Sanderson at the Francis Crick Institute.
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="http://theo.io"><img src="https://avatars.githubusercontent.com/u/19732295?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Theo Sanderson</b></sub></a><br /><a href="https://github.com/theosanderson/taxonium/commits?author=theosanderson" title="Code">💻</a> <a href="https://github.com/theosanderson/taxonium/commits?author=theosanderson" title="Documentation">📖</a> <a href="#design-theosanderson" title="Design">🎨</a> <a href="#ideas-theosanderson" title="Ideas, Planning, & Feedback">🤔</a> <a href="#infra-theosanderson" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="#maintenance-theosanderson" title="Maintenance">🚧</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
 
 We are very grateful to our contributors: