diff --git a/package.json b/package.json
index d3cfbee..825dc03 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "fastify": "^4.2.1",
     "standard": "^17.0.0",
     "tap": "^16.3.0",
-    "tsd": "^0.26.0"
+    "tsd": "^0.27.0"
   },
   "scripts": {
     "lint": "standard",