diff --git a/package.json b/package.json
index f982b4d2..2d405330 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "prettier": "~2.0.4",
     "sinon": "^9.0.0",
     "unexpected": "^11.7.0",
-    "unexpected-function-equality": "^2.0.0"
+    "unexpected-function-equality": "^3.0.0"
   },
   "keywords": [
     "locale",