diff --git a/package.json b/package.json
index c385bc9..35c26ca 100644
--- a/package.json
+++ b/package.json
@@ -37,5 +37,7 @@
     "s2-geometry": "^1.2.9",
     "url": "^0.11.0"
   },
-  "devDependencies": {}
+  "devDependencies": {
+    "babel-cli": "^6.18.0"
+  }
 }