diff --git a/extension/package.json b/extension/package.json
index 1570bd95..e4a4c2e8 100644
--- a/extension/package.json
+++ b/extension/package.json
@@ -77,6 +77,7 @@
     "gitbook-cli": "^2.3.2",
     "path-browserify": "^1.0.1",
     "pug-html-loader": "^1.1.5",
+    "raw-loader": "^4.0.2",
     "react-transform-catch-errors": "^1.0.2",
     "react-transform-hmr": "^1.0.4",
     "selenium-webdriver": "^3.6.0",