diff --git a/chrome/content/zotero/xpcom/pdfWorker/manager.js b/chrome/content/zotero/xpcom/pdfWorker/manager.js
index bcd6785219..a99b3100d9 100644
--- a/chrome/content/zotero/xpcom/pdfWorker/manager.js
+++ b/chrome/content/zotero/xpcom/pdfWorker/manager.js
@@ -24,8 +24,8 @@
 */
 
 const WORKER_URL = 'chrome://zotero/content/xpcom/pdfWorker/worker.js';
-const CMAPS_URL = 'chrome://zotero/content/xpcom/pdfWorker/cmaps/';
-const STANDARD_FONTS_URL = 'chrome://zotero/content/xpcom/pdfWorker/standard_fonts/';
+const CMAPS_URL = 'resource://zotero/pdf-reader/cmaps/';
+const STANDARD_FONTS_URL = 'resource://zotero/pdf-reader/standard_fonts/';
 const RENDERER_URL = 'resource://zotero/pdf-renderer/renderer.html';
 
 class PDFWorker {
diff --git a/pdf-reader b/pdf-reader
index 590af78005..40d044fc8a 160000
--- a/pdf-reader
+++ b/pdf-reader
@@ -1 +1 @@
-Subproject commit 590af780053f198838c0f3b4afa3f197ef45453e
+Subproject commit 40d044fc8aeb91d7855aa22b3025101e89c3a011
diff --git a/scripts/pdf-worker.js b/scripts/pdf-worker.js
index 484fc4ad4c..9aef082022 100644
--- a/scripts/pdf-worker.js
+++ b/scripts/pdf-worker.js
@@ -35,8 +35,7 @@ async function getPDFWorker(signatures) {
 		catch (e) {
 			await exec('npm ci', { cwd: modulePath });
 			await exec('npm run build', { cwd: modulePath });
-			// TODO: Don't copy 'cmaps' and 'standard_fonts' directories once pdf-reader is updated
-			await fs.copy(path.join(modulePath, 'build'), targetDir);
+			await fs.copy(path.join(modulePath, 'build', 'worker.js'), path.join(targetDir, 'worker.js'));
 		}
 		signatures['pdf-worker'] = { hash };
 	}