diff --git a/package.json b/package.json
index fdab043..85985d8 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "mocha": "^4.0.1",
     "mocha-lcov-reporter": "^1.2.0",
     "recursive-readdir-sync": "^1.0.6",
-    "webpack": "^3.5.2",
+    "webpack": "^4.0.0",
     "mockery": "^2.1.0"    
   }
 }