diff --git a/package.json b/package.json
index 7f28603..686238c 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   "devDependencies": {
     "cross-env": "^7.0.0",
     "mocha": "^5.2.0",
-    "which": "^1.2.0"
+    "which": "^2.0.2"
   },
   "dependencies": {
     "ampersand-state": "^5.0.3",