diff --git a/package.json b/package.json
index 3c420dd..a6b96e9 100644
--- a/package.json
+++ b/package.json
@@ -31,12 +31,12 @@
     "similar-english-words": "^1.0.0"
   },
   "devDependencies": {
-    "nyc": "^14.0.0",
+    "nyc": "^15.0.0",
     "prettier": "^1.0.0",
     "remark-cli": "^7.0.0",
     "remark-preset-wooorm": "^6.0.0",
     "tape": "^4.0.0",
-    "xo": "^0.25.0"
+    "xo": "^0.26.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier --write \"**/*.js\" && xo --fix",