diff --git a/package.json b/package.json
index b47a549..871bb2a 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "socket.io-client": "^4.4.1",
     "standard": "^17.0.0",
     "tap": "^16.0.0",
-    "tsd": "^0.20.0",
+    "tsd": "^0.21.0",
     "typescript": "^4.5.4",
     "why-is-node-running": "^2.2.2"
   },