diff --git a/package.json b/package.json
index f67934d..a410a0d 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "eslint-config-pedant": "^1.0.0",
     "mocha": "^4.0.1",
     "nyc": "^11.3.0",
-    "proxyquire": "^1.8.0",
+    "proxyquire": "^2.0.0",
     "sinon": "^4.1.2",
     "sinon-chai": "^2.14.0"
   },