diff --git a/package.json b/package.json
index c1d27cd..5f46da0 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   ],
   "dependencies": {
     "async": "^2.1.5",
-    "check-types": "^7.1.5",
+    "check-types": "^8.0.0",
     "commander": "^2.9.0",
     "escomplex": "2.0.0-alpha",
     "esprima": "^3.1.3"