diff --git a/package.json b/package.json
index e004752..a240431 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
   "license": "ISC",
   "dependencies": {
     "@babel/polyfill": "~7.2",
+    "@zxing/library": "^0.16.0",
     "body-parser": "^1.19.0",
     "chart.js": "^2.9.3",
     "clean-webpack-plugin": "^3.0.0",