diff --git a/package.json b/package.json
index 937cfb5d..d5d9c69d 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "broccoli-funnel": "^1.0.0",
     "broccoli-merge-trees": "^1.0.0",
     "broccoli-persistent-filter": "^1.0.1",
-    "clone": "^1.0.2",
+    "clone": "^2.0.0",
     "hash-for-dep": "^1.0.2",
     "json-stable-stringify": "^1.0.0"
   },