diff --git a/types/tinymce/index.d.ts b/types/tinymce/index.d.ts
index 174ca4fff8..3ca7bb3e92 100644
--- a/types/tinymce/index.d.ts
+++ b/types/tinymce/index.d.ts
@@ -61,6 +61,8 @@ export function triggerSave(): void;
 export function get(id: string | number): Editor;
 
 export interface Settings {
+  base_url?: string;
+
   table_toolbar?: string;
 
   table_appearance_options?: boolean;