diff --git a/package.json b/package.json
index c270ca0e..4c6959b4 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "karma-mocha": "^1.3.0",
     "mocha": "^5.2.0",
     "mocha-lcov-reporter": "^1.2.0",
-    "xo": "^0.23.0"
+    "xo": "^0.37.1"
   },
   "peerDependenciesMeta": {
     "supports-color": {