diff --git a/package.json b/package.json
index 59804c2..b90426b 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "memory-streams": "^0.1.0",
     "mocha": "~3.4.1",
     "nock": "~9.0.6",
-    "power-assert": "~1.4.2",
+    "power-assert": "~1.5.0",
     "sinon": "~2.3.0"
   },
   "directories": {