diff --git a/src/package.json b/src/package.json
index 7ce051b6..328713a1 100644
--- a/src/package.json
+++ b/src/package.json
@@ -24,6 +24,7 @@
     "react-addons-css-transition-group": "^15.4.1",
     "react-bootstrap": "~0.30.7",
     "react-dom": "^15.4.1",
+    "valid-url": "^1.0.9",
     "yargs": "^3.32.0"
   }
 }