diff --git a/package.json b/package.json
index 315d0fd..644b1a5 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "proxyquire": "^2.1.3",
     "standard": "^16.0.3",
     "tap": "^16.0.1",
-    "tsd": "^0.19.0",
+    "tsd": "^0.20.0",
     "typescript": "^4.0.5"
   },
   "dependencies": {}