diff --git a/package.json b/package.json
index 2009c9a..4e0898a 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   "dependencies": {
     "gulp-util": "^3.0.8",
     "htmlhint": "^1.1.4",
-    "through2": "^2.0.3"
+    "through2": "^5.0.3"
   },
   "devDependencies": {
     "gulp": "^4.0.2",