diff --git a/package.json b/package.json
index ec43f300..951c04e1 100644
--- a/package.json
+++ b/package.json
@@ -64,6 +64,8 @@
     "glob": "*",
     "microtime": "^0.6.0",
     "moment": "~2.5.0",
+    "leveldown": "~0.10.0",
+    "levelup": "~0.19.0",
     "preconditions": "^1.0.7",
     "should": "~2.1.1",
     "sinon": "~1.7.3",