diff --git a/index.md b/index.md
index f45ff11..0f81627 100644
--- a/index.md
+++ b/index.md
@@ -7,10 +7,22 @@ type: docs
 
 Manage linux package updates.
 
+* [Default Variables](#default-variables)
+  * [update_packages_exclude](#update-packages-exclude)
 * [Dependencies](#dependencies)
 
 ---
 
+## Default Variables
+
+### update_packages_exclude
+
+#### Default value
+
+```YAML
+update_packages_exclude: []
+```
+
 ## Dependencies
 
 None.