diff --git a/src/extensions/additional/YfmHtmlBlock/utils.ts b/src/extensions/additional/YfmHtmlBlock/utils.ts
index 9b7d2ad6f..476431cd2 100644
--- a/src/extensions/additional/YfmHtmlBlock/utils.ts
+++ b/src/extensions/additional/YfmHtmlBlock/utils.ts
@@ -1,4 +1,4 @@
-import type {SanitizeOptions} from '@diplodoc/transform/lib/sanitize';
+import type {SanitizeOptions} from '@diplodoc/transform/lib/sanitize.js';
 
 import {getSanitize} from 'src/utils/getSanitize';