diff --git a/package.json b/package.json
index 79c9f0d5..4d0437bb 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
   "license": "MIT",
   "devDependencies": {
     "axios": "0.7.0",
-    "chai": "3.4.1",
+    "chai": "3.5.0",
     "codecov.io": "0.1.6",
     "ghooks": "1.0.0",
     "istanbul": "0.3.22",