diff --git a/package.json b/package.json
index 7b21530..b315f79 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "fastify": "^3.25.3",
     "standard": "^16.0.4",
     "tap": "^16.0.0",
-    "tsd": "^0.19.1"
+    "tsd": "^0.20.0"
   },
   "dependencies": {
     "fast-json-stringify": "^3.0.0"