diff --git a/docs/development/plugin-triggers.md b/docs/development/plugin-triggers.md
index 4e916f8dd..cf71ac7f9 100644
--- a/docs/development/plugin-triggers.md
+++ b/docs/development/plugin-triggers.md
@@ -546,9 +546,9 @@ echo false
 
 ### `post-domains-update`
 
-- Description: Allows you to run commands once the domain for an application has been updated.
+- Description: Allows you to run commands once the domain for an application has been updated. It also sends in the command that has been used. This can be "add", "clear" or "remove". The third argument will be the optional list of domains
 - Invoked by: `dokku domains:add`, `dokku domains:clear`, `dokku domains:remove`
-- Arguments: `$APP`
+- Arguments: `$APP` `action name` `domains`
 - Example:
 
 ```shell