diff --git a/contracts/package.json b/contracts/package.json
index 258ff5c..31b8c0c 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -56,6 +56,9 @@
     "readline": "^1.3.0",
     "vm2": "^3.9.18"
   },
+  "optionalDependencies": {
+    "fsevents": "*"
+  },
   "prettier": {
     "trailingComma": "es5",
     "tabWidth": 2,