diff --git src/readme.html src/readme.html
index 6fcf7cd..78da489 100644
--- src/readme.html
+++ src/readme.html
@@ -83,7 +83,7 @@
 <h2>Final Notes</h2>
 <ul>
 	<li>If you have any suggestions, ideas, or comments, or if you (gasp!) found a bug, join us in the <a href="https://wordpress.org/support/">Support Forums</a>.</li>
-	<li>WordPress has a robust plugin <abbr title="application programming interface">API</abbr> that makes extending the code easy. If you are a developer interested in utilizing this, see the <a href="https://codex.wordpress.org/Plugin_API" title="WordPress plugin API">plugin documentation in the Codex</a>. You shouldn&#8217;t modify any of the core code.</li>
+	<li>WordPress has a robust plugin <abbr title="application programming interface">API</abbr> that makes extending the code easy. If you are a developer interested in utilizing this, see the <a href="https://developer.wordpress.org/plugins/">Plugin Developer Handbook</a>. You shouldn&#8217;t modify any of the core code.</li>
 </ul>
 
 <h2>Share the Love</h2>