diff --git a/package.json b/package.json
index db01c00..506d34f 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,6 @@
   "devDependencies": {
     "chai": "^4.1.2",
     "mocha": "^5.1.1",
-    "ts-node": "^6.0.3"
+    "ts-node": "^8.1.1"
   }
 }