diff --git a/packages/extension-heading/src/heading.ts b/packages/extension-heading/src/heading.ts
index 53625d58..5a3c285f 100644
--- a/packages/extension-heading/src/heading.ts
+++ b/packages/extension-heading/src/heading.ts
@@ -1,6 +1,6 @@
 import { Node, mergeAttributes, textblockTypeInputRule } from '@tiptap/core'
 
-type Level = 1 | 2 | 3 | 4 | 5 | 6
+export type Level = 1 | 2 | 3 | 4 | 5 | 6
 
 export interface HeadingOptions {
   levels: Level[],