diff --git a/website/content/docs/authentication-backends.md b/website/content/docs/authentication-backends.md
index 55440ccb..0ff6b9d9 100644
--- a/website/content/docs/authentication-backends.md
+++ b/website/content/docs/authentication-backends.md
@@ -135,6 +135,7 @@ If you would like to facilitate your own OAuth authentication rather than use Ne
 | [@vencax](https://github.com/vencax)           | GitHub, GitHub Enterprise | Node.js                 | [Repo](https://github.com/vencax/netlify-cms-github-oauth-provider)                                                                          |
 | [@igk1972](https://github.com/igk1972)         | GitHub, GitHub Enterprise | Go                      | [Repo](https://github.com/igk1972/netlify-cms-oauth-provider-go)                                                                             |
 | [@davidejones](https://github.com/davidejones) | GitHub, GitHub Enterprise | Python                  | [Repo](https://github.com/davidejones/netlify-cms-oauth-provider-python)                                                                     |
+| [@marcelkornblum](https://github.com/marcelkornblum) | GitHub, GitHub Enterprise | Google AppEngine with Python                  | [Repo](https://github.com/signal-noise/netlify-cms-oauth-provider-python-appengine)                                                                  |
 | [@marksteele](https://github.com/marksteele)   | GitHub, GitHub Enterprise | Serverless              | [Repo](https://github.com/marksteele/netlify-serverless-oauth2-backend), [Blog](https://www.control-alt-del.org/blog/serverless-blog-howto/) |
 | [@Herohtar](https://github.com/Herohtar)       | GitHub, GitHub Enterprise | Firebase Cloud Function | [Repo](https://github.com/Herohtar/netlify-cms-oauth-firebase)                                                                               |