diff --git a/packages/remark-plugins/plugins/anchor-links/index.js b/packages/remark-plugins/plugins/anchor-links/index.js
index 88f0a699..2b71b696 100644
--- a/packages/remark-plugins/plugins/anchor-links/index.js
+++ b/packages/remark-plugins/plugins/anchor-links/index.js
@@ -1,4 +1,4 @@
-import { generateSlug, generateAriaLabel } from '../../util/generate-slug'
+import { generateSlug, generateAriaLabel } from '../../util/generate-slug.js'
 import { map } from 'unist-util-map'
 import { is } from 'unist-util-is'
 import { remark } from 'remark'