diff --git a/src/index.ts b/src/index.ts
index 70b58a4..433e263 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,7 +19,7 @@ export interface HeaderData {
 /**
  * @description Tool's config from Editor
  */
-interface HeaderConfig {
+export interface HeaderConfig {
   /** Block's placeholder */
   placeholder?: string;
   /** Heading levels */