diff --git a/gulpfile.js b/gulpfile.js
index 64bd8956f..22b53336b 100755
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -344,16 +344,16 @@ function csrf() {
 
 function pdfjs() {
     const web = gulp.src([
-        config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/web/**/*',
-        '!' + config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/web/cmaps/*',
-        '!' + config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/web/*.map',
-        '!' + config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/web/*.pdf',
+        config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/web/**/*',
+        '!' + config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/web/cmaps/*',
+        '!' + config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/web/*.map',
+        '!' + config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/web/*.pdf',
     ])
         .pipe(gulp.dest(config.production + '/pdfjs/web'));
 
     const build = gulp.src([
-        config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/build/*',
-        '!' + config.nodeDirectory + '/pdf.js/lib/dist/pdfjs/build/*.map',
+        config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/build/*',
+        '!' + config.nodeDirectory + '/pdf.js/demo/vue/public/pdfjs-prebuilt/build/*.map',
     ])
         .pipe(gulp.dest(config.production + '/pdfjs/build'));