diff --git a/package.json b/package.json
index 2ab0e143..644d3201 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "chalk": "^2.0.1",
     "codecov": "^3.0.0",
     "cssnano": "^3.4.0",
-    "del": "^3.0.0",
+    "del": "^4.0.0",
     "eslint": "^4.0.0",
     "eslint-config-standard": "^10.2.1",
     "eslint-plugin-chai-friendly": "^0.4.0",