diff --git a/package.json b/package.json
index 67807a1..e2be8ea 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,6 @@
     "expect": "^23.0.1",
     "mocha": "^5.0.0",
     "standard-version": "^4.4.0",
-    "to-vfile": "^4.0.0",
     "uglify-js": "^3.0.27"
   },
   "config": {