diff --git a/README.md b/README.md
index 7f99b3d..1ff9936 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,14 @@ command, or it can be used by a GitHub workflow to update issues.
 
 Notices are declared as JSON objects with the following structure:
 
-| Field           | Description                                                 | Format          |
-| :-------------- | :---------------------------------------------------------- | --------------- |
-| `title`         | The title of the incident (max length: 100)                 | Free form text  |
-| `issueNumber`   | The ID of the GitHub issue where we are tracking this event | Number          |
-| `overview`      | A paragraph with more information about the incident        | Free form text  |
-| `components`    | A list of the components affected by the incident           | See table below |
-| `schemaVersion` | The version of the schema used for this notice              | String          |
+| Field           | Description                                                                                          | Format                |
+| :-------------- | :----------------------------------------------------------------------------------------------------| ----------------------|
+| `title`         | The title of the incident (max length: 100)                                                          | Free form text        |
+| `issueNumber`   | The ID of the GitHub issue where we are tracking this event                                          | Number                |
+| `overview`      | A paragraph with more information about the incident                                                 | Free form text        |
+| `severity`      | The severity of the notice. Warnings are printer yellow. Errors are printed red. Default is no color | 'warning' or 'error'  |
+| `components`    | A list of the components affected by the incident                                                    | See table below       |
+| `schemaVersion` | The version of the schema used for this notice                                                       | String                |
 
 Component structure:
 
@@ -33,6 +34,7 @@ Component structure:
   the notices from the website.
 * The reserved word `framework`. This will match against the
   `@aws-cdk/core`, in case of v1 or `aws-cdk-lib` in case of v2.
+* The reserved work 'bootstrap'. This will match against the bootstrap stack version in each environment.
 
 [semver]: https://www.npmjs.com/package/semver