diff --git a/src/pdf/pdfThumbnailService.ts b/src/pdf/pdfThumbnailService.ts
index ead5a6d..948b21c 100644
--- a/src/pdf/pdfThumbnailService.ts
+++ b/src/pdf/pdfThumbnailService.ts
@@ -1,5 +1,5 @@
-import * as pdfjsLib from 'pdfjs-dist';
-import pdfjsWorker from 'pdfjs-dist/build/pdf.worker?worker&url';
+import * as pdfjsLib from 'pdfjs-dist/legacy/build/pdf.mjs';
+import pdfjsWorker from 'pdfjs-dist/legacy/build/pdf.worker.mjs?worker&url';
 
 // pdf.js worker setup for Vite
 // eslint-disable-next-line @typescript-eslint/no-explicit-any