diff --git a/package.json b/package.json
index abff26d75e..df7ca365d7 100644
--- a/package.json
+++ b/package.json
@@ -88,6 +88,7 @@
     "styled-components": "^3.2.6",
     "swagger-spec-express": "^2.0.7",
     "uuid": "^3.3.2",
+    "webpack-sources": "1.0.1",
     "webpack-cli": "^3.0.8",
     "youtube-playlist": "^1.0.2",
     "ytdl-core": "^0.29.2"