diff --git a/COMPONENT_INDEX.md b/COMPONENT_INDEX.md
index d43e129c..279d1992 100644
--- a/COMPONENT_INDEX.md
+++ b/COMPONENT_INDEX.md
@@ -4306,17 +4306,18 @@ export type CarbonTheme = "white" | "g10" | "g80" | "g90" | "g100";
 
 ### Props
 
-| Prop name       | Required | Kind             | Reactive | Type                                                                                                           | Default value                      | Description                                                             |
-| :-------------- | :------- | :--------------- | :------- | -------------------------------------------------------------------------------------------------------------- | ---------------------------------- | ----------------------------------------------------------------------- |
-| kind            | No       | <code>let</code> | No       | <code>"error" &#124; "info" &#124; "info-square" &#124; "success" &#124; "warning" &#124; "warning-alt"</code> | <code>"error"</code>               | Specify the kind of notification                                        |
-| lowContrast     | No       | <code>let</code> | No       | <code>boolean</code>                                                                                           | <code>false</code>                 | Set to `true` to use the low contrast variant                           |
-| timeout         | No       | <code>let</code> | No       | <code>number</code>                                                                                            | <code>0</code>                     | Set the timeout duration (ms) to hide the notification after opening it |
-| role            | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>"alert"</code>               | Set the `role` attribute                                                |
-| title           | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the title text                                                  |
-| subtitle        | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the subtitle text                                               |
-| caption         | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the caption text                                                |
-| iconDescription | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>"Closes notification"</code> | Specify the ARIA label for the icon                                     |
-| hideCloseButton | No       | <code>let</code> | No       | <code>boolean</code>                                                                                           | <code>false</code>                 | Set to `true` to hide the close button                                  |
+| Prop name       | Required | Kind             | Reactive | Type                                                                                                           | Default value                      | Description                                                                               |
+| :-------------- | :------- | :--------------- | :------- | -------------------------------------------------------------------------------------------------------------- | ---------------------------------- | ----------------------------------------------------------------------------------------- |
+| kind            | No       | <code>let</code> | No       | <code>"error" &#124; "info" &#124; "info-square" &#124; "success" &#124; "warning" &#124; "warning-alt"</code> | <code>"error"</code>               | Specify the kind of notification                                                          |
+| lowContrast     | No       | <code>let</code> | No       | <code>boolean</code>                                                                                           | <code>false</code>                 | Set to `true` to use the low contrast variant                                             |
+| timeout         | No       | <code>let</code> | No       | <code>number</code>                                                                                            | <code>0</code>                     | Set the timeout duration (ms) to hide the notification after opening it                   |
+| role            | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>"alert"</code>               | Set the `role` attribute                                                                  |
+| title           | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the title text                                                                    |
+| subtitle        | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the subtitle text                                                                 |
+| caption         | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>""</code>                    | Specify the caption text                                                                  |
+| iconDescription | No       | <code>let</code> | No       | <code>string</code>                                                                                            | <code>"Closes notification"</code> | Specify the ARIA label for the icon                                                       |
+| hideCloseButton | No       | <code>let</code> | No       | <code>boolean</code>                                                                                           | <code>false</code>                 | Set to `true` to hide the close button                                                    |
+| fullWidth       | No       | <code>let</code> | No       | <code>boolean</code>                                                                                           | <code>false</code>                 | Set to `true` for the notification to span<br />the full width of its containing element. |
 
 ### Slots
 
diff --git a/docs/src/COMPONENT_API.json b/docs/src/COMPONENT_API.json
index e149ae27..0d9c9b5e 100644
--- a/docs/src/COMPONENT_API.json
+++ b/docs/src/COMPONENT_API.json
@@ -13386,6 +13386,18 @@
           "isRequired": false,
           "constant": false,
           "reactive": false
+        },
+        {
+          "name": "fullWidth",
+          "kind": "let",
+          "description": "Set to `true` for the notification to span\nthe full width of its containing element.",
+          "type": "boolean",
+          "value": "false",
+          "isFunction": false,
+          "isFunctionDeclaration": false,
+          "isRequired": false,
+          "constant": false,
+          "reactive": false
         }
       ],
       "moduleExports": [],
diff --git a/types/Notification/ToastNotification.svelte.d.ts b/types/Notification/ToastNotification.svelte.d.ts
index dd22e4aa..9e86f6ed 100644
--- a/types/Notification/ToastNotification.svelte.d.ts
+++ b/types/Notification/ToastNotification.svelte.d.ts
@@ -62,6 +62,13 @@ export interface ToastNotificationProps
    * @default false
    */
   hideCloseButton?: boolean;
+
+  /**
+   * Set to `true` for the notification to span
+   * the full width of its containing element.
+   * @default false
+   */
+  fullWidth?: boolean;
 }
 
 export default class ToastNotification extends SvelteComponentTyped<