diff --git a/package.json b/package.json
index 6298439..b6d8abc 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "npmlog": "^4.0.2",
     "portfinder-sync": "0.0.2",
     "selenium-webdriver": "^3.1.0",
-    "which": "^1.2.12",
+    "which": "^2.0.0",
     "yargs": "^8.0.1"
   },
   "devDependencies": {