Fix an issue where this node don't work with [email protected]

This closes #8

Author: Daisuke Baba

package.json

@@ -59,7 +59,7 @@
     "supertest": "^1.1.0"
   },
   "dependencies": {
-    "noble": "^1.8.1",
+    "noble": "~1.8.1",
     "node-cache": "^4.1.0",
     "queue": "^4.2.1",
     "source-map-support": "^0.4.2"