diff --git a/package.json b/package.json
index 398af31..d635e1f 100644
--- a/package.json
+++ b/package.json
@@ -42,13 +42,13 @@
     "express": "^4.9.5",
     "express-favicon": "^1.0.1",
     "gulp": "^3.6.0",
-    "gulp-less": "^3.0.1",
+    "gulp-less": "^4.0.0",
     "gulp-minify-css": "^0.3.4",
     "gulp-rename": "^1.2.0",
     "gulp-sourcemaps": "^0.4.1",
     "gulp-streamify": "0.0.5",
     "gulp-uglify": "^0.3.1",
-    "gulp-uncss": "^0.5.1",
+    "gulp-uncss": "^1.0.6",
     "gulp-util": "^2.2.14",
     "hogan.js": "^3.0.2",
     "inherits": "^2.0.1",