diff --git a/rollup.config.js b/rollup.config.js
index 49e0489e00506be99796a5527790ea5a7c1ed565..945cfdb5d39caf122b5ceec7a575a21b3c171795 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -192,7 +192,7 @@ Dependencies:
                 {src: 'assets/silent-check-sso.html', dest:'dist'},
                 {src: 'assets/dbp-signature-maintenance.html', dest:'dist'},
                 {
-                    src: await getPackagePath('pdfjs-dist', 'es5/build/pdf.worker.js'),
+                    src: await getPackagePath('pdfjs-dist', 'legacy/build/pdf.worker.js'),
                     dest: 'dist/' + await getDistPath(pkg.name, 'pdfjs'),
                     // enable signatures in pdf preview
                     transform: (contents) => replaceAll(contents.toString(), '"Sig"', '"Sig-patched-show-anyway"')
diff --git a/src/dbp-pdf-preview.js b/src/dbp-pdf-preview.js
index 3a51ca3e9439f671598f4cce538ed927494e1d78..17395c1dee63308c9474859f38dbc576e88c1035 100644
--- a/src/dbp-pdf-preview.js
+++ b/src/dbp-pdf-preview.js
@@ -7,7 +7,7 @@ import DBPLitElement from '@dbp-toolkit/common/dbp-lit-element';
 import {MiniSpinner, Icon} from '@dbp-toolkit/common';
 import * as commonUtils from "@dbp-toolkit/common/utils";
 import * as commonStyles from '@dbp-toolkit/common/styles';
-import pdfjs from 'pdfjs-dist/es5/build/pdf.js';
+import pdfjs from 'pdfjs-dist/legacy/build/pdf.js';
 import {name as pkgName} from './../package.json';
 import {readBinaryFileContent} from './utils.js';