diff --git a/index.md b/index.md
index f09ea7d..d8f3ba9 100644
--- a/index.md
+++ b/index.md
@@ -13,6 +13,7 @@ Setup docker-renovate garbage collector. Keep docker hosts small.
   * [renovatebot_endpoint](#renovatebot_endpoint)
   * [renovatebot_git_author](#renovatebot_git_author)
   * [renovatebot_github_token](#renovatebot_github_token)
+  * [renovatebot_host_rules](#renovatebot_host_rules)
   * [renovatebot_image](#renovatebot_image)
   * [renovatebot_interval](#renovatebot_interval)
   * [renovatebot_onboarding_config](#renovatebot_onboarding_config)
@@ -77,6 +78,26 @@ If you are running on any platform except github.com, it's important to also con
 renovatebot_github_token: _unset_
 ```
 
+### renovatebot_host_rules
+
+List of host rules to propagate to renovate.
+
+#### Default value
+
+```YAML
+renovatebot_host_rules: []
+```
+
+#### Example usage
+
+```YAML
+renovatebot_host_rules:
+  - hostType: "docker"
+    hostName: "your.host.io"
+    username: "demo"
+    password: "secure"
+```
+
 ### renovatebot_image
 
 Docker image to use.