diff --git a/package.json b/package.json
index b632a2a..87fa3f7 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
 		"tempy": "^0.2.1",
 		"tslint": "^5.9.1",
 		"tslint-xo": "^0.8.0",
-		"typescript": "^2.8.1",
+		"typescript": "^2.9.0",
 		"zen-observable": "^0.8.8"
 	},
 	"types": "dist/index.d.ts"