diff --git a/package.json b/package.json
index 9b4b4704..c92c5c5e 100644
--- a/package.json
+++ b/package.json
@@ -82,7 +82,7 @@
     "js-yaml": "^3.10.0",
     "request": "^2.83.0",
     "uglify-es": "^3.3.10",
-    "xo": "^0.20.3",
+    "xo": "^0.21.0",
     "yargs": "^11.0.0"
   },
   "engines": {