diff --git a/README.md b/README.md
index 32d1c82..3ef0b8c 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ This should be updated fairly regularly. As usual, **pull requests are encourage
 * [Sphinx](https://www.sphinx-doc.org/) - Comprehensive documentation tool using restructuredText with beautiful HTML and PDF output. (contributed by [@nikhilcutshort](https://twitter.com/nikhilcutshort))
 * [MkDocs](https://www.mkdocs.org/) - Documentation with Markdown, written in Python. (contributed by [ericbn](https://github.com/ericbn))
 * [Read the Docs](https://readthedocs.org/) - Hosted docs using Sphinx or MkDocs, supports translations and finding docs for specific software versions. Used by the Django Docs. (contributed by [Stephen Paulger](https://github.com/stephenpaulger))
-* [ApiGen](http://apigen.org/) - Creates clean API documentation from PHP source code (contributed by [bryceadams](http://bryce.se/))
+* [ApiGen](https://www.apigen.org/ApiGen/) - Creates clean API documentation from PHP source code (contributed by [bryceadams](http://bryce.se/))
 * [docgenerator](https://github.com/Ralt/docgenerator/blob/master/README.md) - Organize your documentation in Markdown files. (contributed by [Florian Margaine](http://margaine.com))
 * [dexy](http://www.dexy.it/) - Extensible documentation/report generator supporting multiple programming languages and serveral input and output formats. (contributed by [troytop](http://github.com/troytop))
 * [Slate](https://github.com/tripit/slate) - Static API documentation creation tool from the team at Tripit.