diff --git a/pdfjs-get.js b/pdfjs-get.js
index 110375b5..4a508555 100644
--- a/pdfjs-get.js
+++ b/pdfjs-get.js
@@ -6,7 +6,7 @@ const cliProgress = require('cli-progress')
 const npmPackage = require('./package.json')
 
 // Fetching pdf.js build release
-const PDFJSversion = npmPackage.dependencies['pdfjs-dist'].substr(1)
+const PDFJSversion = npmPackage.dependencies['pdfjs-dist'].slice(1)
 console.info('Fetching pdfjs', PDFJSversion)
 
 // Init progress