diff --git a/package.json b/package.json
index a1ad306..4869798 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "eslint-config-prettier": "^2.2.0",
     "nunjucks": "^3.0.1",
     "nyc": "^11.0.3",
-    "xo": "^0.18.2"
+    "xo": "^0.28.1"
   },
   "engines": {
     "node": ">0.12"