diff --git a/src/__tests__/snapshot-tests/__snapshots__/documenter.test.ts.snap b/src/__tests__/snapshot-tests/__snapshots__/documenter.test.ts.snap
index d82af6e4b56..1489311448a 100644
--- a/src/__tests__/snapshot-tests/__snapshots__/documenter.test.ts.snap
+++ b/src/__tests__/snapshot-tests/__snapshots__/documenter.test.ts.snap
@@ -6792,7 +6792,8 @@ When \`type\` is set to "checkbox", the values set to \`href\`, \`external\` and
 ### group
 
 - \`items\` (ReadonlyArray<Item>) - an array of item objects. Items will be rendered as nested menu items but only for the first nesting level, multi-nesting is not supported.
-An item which belongs to nested group has the following properties: \`id\`, \`text\`, \`disabled\`, and \`description\`.",
+An item which belongs to nested group has the following properties: \`id\`, \`text\`, \`disabled\`, and \`description\`.
+- \`expandable\` (boolean) - (Optional) Defines whether the group is expandable (this overrides the component-level \`expandableGroups\` property).",
       "name": "items",
       "optional": false,
       "type": "ReadonlyArray<ButtonDropdownProps.ItemOrGroup>",
diff --git a/src/button-dropdown/interfaces.ts b/src/button-dropdown/interfaces.ts
index 7673657382b..c75e6196209 100644
--- a/src/button-dropdown/interfaces.ts
+++ b/src/button-dropdown/interfaces.ts
@@ -57,6 +57,7 @@ export interface ButtonDropdownProps extends BaseComponentProps, ExpandToViewpor
    *
    * - `items` (ReadonlyArray<Item>) - an array of item objects. Items will be rendered as nested menu items but only for the first nesting level, multi-nesting is not supported.
    * An item which belongs to nested group has the following properties: `id`, `text`, `disabled`, and `description`.
+   * - `expandable` (boolean) - (Optional) Defines whether the group is expandable (this overrides the component-level `expandableGroups` property).
    *
    */
   items: ReadonlyArray<ButtonDropdownProps.ItemOrGroup>;