diff --git a/package.json b/package.json
index c6377cc..c97193b 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,6 @@
   "dependencies": {
     "async": "^2.1.4",
     "jsonld": "0.4.9",
-    "memdb": "^1.3.1",
     "n3": "^0.10.0",
     "uuid": "^3.0.1"
   },
@@ -50,6 +49,7 @@
     "leveldown": "^1.5.3",
     "levelgraph": "^2.0.0",
     "lodash": "^4.17.4",
+    "memdb": "^1.3.1",
     "mocha": "^4.1.0",
     "uglify-js": "^3.0.0",
     "zuul": "^3.11.1"