diff --git a/ui/snowpack.config.js b/ui/snowpack.config.js
index 9d63711..a042b8e 100644
--- a/ui/snowpack.config.js
+++ b/ui/snowpack.config.js
@@ -4,6 +4,7 @@ module.exports = {
         public: { url: '/', static: true },
         src: { url: '/dist' },
         '../core/src': { url: '/core' },
+        'node_modules/pdfjs-dist/build/': { url: '/worker', static: true },
     },
     plugins: [
         ['@snowpack/plugin-build-script', { cmd: 'postcss', input: ['.css'], output: ['.css'] }],
diff --git a/ui/src/store.ts b/ui/src/store.ts
index 0efba6c..8ae19a1 100644
--- a/ui/src/store.ts
+++ b/ui/src/store.ts
@@ -6,9 +6,7 @@ import { Writable, writable } from 'svelte/store';
 
 export let parseResult: Writable<ParseResult> = writable(undefined);
 
-// TODO this will setup fake worker cause getMainThreadWorkerMessageHandler isn't null
-import pdfjsWorker from 'pdfjs-dist//es5/build/pdf.worker.entry';
-pdfjs.GlobalWorkerOptions.workerSrc = pdfjsWorker;
+pdfjs.GlobalWorkerOptions.workerSrc = 'worker/pdf.worker.min.js';
 
 const parser = pdfParser(pdfjs);