diff --git a/index.d.ts b/index.d.ts
index 14c7bc6..aeeabc0 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -11,7 +11,9 @@ export interface apiObject {
     | boolean
     | undefined
     | apiObject
-    | (string | number | boolean | apiObject)[];
+    | Date
+    | null
+    | (string | number | boolean | apiObject | Date | null | undefined)[];
 }
 
 /**