diff --git a/package.json b/package.json
index 4be454f0..5da980f8 100644
--- a/package.json
+++ b/package.json
@@ -63,10 +63,10 @@
     "remark-preset-wooorm": "^9.0.0",
     "rimraf": "^3.0.0",
     "tape": "^5.0.0",
-    "tsd": "^0.19.0",
+    "tsd": "^0.21.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
-    "xo": "^0.48.0"
+    "xo": "^0.50.0"
   },
   "scripts": {
     "build": "rimraf \"test/**/*.d.ts\" && tsc && tsd && type-coverage",