diff --git a/vite.config.ts b/vite.config.ts
index 6826527..17339bd 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -39,6 +39,11 @@
     build: {
       outDir: mode === 'production' ? 'dist' : `dist-${mode}`,
       sourcemap: env.VITE_BUILD_SOURCEMAP === 'true',
+      rollupOptions: {
+        external: [
+          'pdfjs-dist',
+        ],
+      },
     },
     define: {
       __SYSTEM_INFO__: JSON.stringify({