diff --git a/packages/devextreme/js/ui/html_editor.d.ts b/packages/devextreme/js/ui/html_editor.d.ts
index a8226755d16a..ad9aa33917df 100644
--- a/packages/devextreme/js/ui/html_editor.d.ts
+++ b/packages/devextreme/js/ui/html_editor.d.ts
@@ -560,7 +560,7 @@ export interface dxHtmlEditorMention {
      * @public
      * @type Store|DataSource|DataSourceOptions|string|Array<any>|null
      */
-    dataSource?: DataSourceLike<string> | null;
+    dataSource?: DataSourceLike<any> | null;
     /**
      * @docid
      * @default "this"
diff --git a/packages/devextreme/ts/dx.all.d.ts b/packages/devextreme/ts/dx.all.d.ts
index b9ef79c1cb34..a7a5b3800109 100644
--- a/packages/devextreme/ts/dx.all.d.ts
+++ b/packages/devextreme/ts/dx.all.d.ts
@@ -19257,7 +19257,7 @@ declare module DevExpress.ui {
     /**
      * [descr:dxHtmlEditorMention.dataSource]
      */
-    dataSource?: DevExpress.data.DataSource.DataSourceLike<string> | null;
+    dataSource?: DevExpress.data.DataSource.DataSourceLike<any> | null;
     /**
      * [descr:dxHtmlEditorMention.displayExpr]
      */