diff --git a/package.json b/package.json
index 966c9e8..c7ef8af 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
 		"semver": "^7.3.5",
 		"semver-regex": "^4.0.0",
 		"tsd": "^0.17.0",
+		"typescript": "^4.3.5",
 		"xo": "^0.42.0"
 	}
 }