diff --git a/static/source.html b/static/source.html
index 6aaf7f71..1669bf42 100644
--- a/static/source.html
+++ b/static/source.html
@@ -49,7 +49,8 @@
         <main id="source">
             <h1><a href="#source">Source code</a></h1>
 
-            <p>GrapheneOS is an open source project with an open development process.</p>
+            <p>GrapheneOS is an <a href="https://opensource.org/osd">open source</a> project with
+            an open development process.</p>
 
             <p>The GrapheneOS sources are hosted in the
             <a href="https://github.com/GrapheneOS">GrapheneOS organization on GitHub</a>. Since