diff --git a/.changeset/real-coins-look.md b/.changeset/real-coins-look.md
new file mode 100644
index 0000000..7c610fa
--- /dev/null
+++ b/.changeset/real-coins-look.md
@@ -0,0 +1,5 @@
+---
+'@openai/chatkit': minor
+---
+
+ChatKit threads now support BasicRoot widgets, types updated to reflect this
diff --git a/packages/chatkit/types/index.d.ts b/packages/chatkit/types/index.d.ts
index b1c9c84..0b56e3e 100644
--- a/packages/chatkit/types/index.d.ts
+++ b/packages/chatkit/types/index.d.ts
@@ -192,7 +192,10 @@ export type WidgetsOption = {
    */
   onAction?: (
     action: { type: string; payload?: Record<string, unknown> },
-    widgetItem: { id: string; widget: Widgets.Card | Widgets.ListView },
+    widgetItem: {
+      id: string;
+      widget: Widgets.Card | Widgets.ListView | Widgets.BasicRoot;
+    },
   ) => Promise<void>;
 };