diff --git a/package.json b/package.json
index 5ec5300..151a01f 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
   "dependencies": {
     "bluebird": "^3.4.7",
     "body-parser": "^1.15.2",
+    "btoa": "^1.1.2",
     "corsproxy": "^1.5.0",
     "electron": "^1.6.5",
     "express": "^4.14.0",