diff --git a/package.json b/package.json
index 5ceb7677..bb7d9933 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "async": "1.2.1",
     "benchmark": "1.0.0",
     "bitcore": "^0.12.12",
-    "chai": "3.0.0",
+    "chai": "^3.0.0",
     "mocha": "~1.16.2",
     "sinon": "^1.15.4"
   }