diff --git a/node_modules/js-yaml/node_modules/esprima/package.json b/node_modules/js-yaml/node_modules/esprima/package.json
index 55d445995e..4cd68e6585 100644
--- a/node_modules/js-yaml/node_modules/esprima/package.json
+++ b/node_modules/js-yaml/node_modules/esprima/package.json
@@ -50,7 +50,7 @@
     "karma-mocha": "~1.3.0",
     "karma-safari-launcher": "~1.0.0",
     "karma-safaritechpreview-launcher": "~0.0.4",
-    "karma-sauce-launcher": "~1.1.0",
+    "karma-sauce-launcher": "~4.1.5",
     "lodash": "~3.10.1",
     "mocha": "~3.2.0",
     "node-tick-processor": "~0.0.2",
@@ -60,7 +60,7 @@
     "typescript": "~2.3.2",
     "typescript-formatter": "~5.1.3",
     "unicode-8.0.0": "~0.7.0",
-    "webpack": "~1.14.0"
+    "webpack": "~4.0.0"
   },
   "keywords": [
     "ast",