diff --git a/package.json b/package.json
index 93cde09..24aa8e6 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,6 @@
     "proxyquire": "^2.1.3",
     "standard": "^17.0.0",
     "tap": "^16.0.1",
-    "tsd": "^0.27.0"
+    "tsd": "^0.28.0"
   }
 }