diff --git a/package.json b/package.json
index 91a8124..5244a3f 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "mocha": "^3.2.0",
     "webpack": "beta",
     "webpack-dev-server": "^1.16.2",
-    "yargs": "^6.6.0"
+    "yargs": "17.1.1"
   },
   "dependencies": {}
 }