diff --git a/package.json b/package.json
index 7205268..c64b31f 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "gulp": "github:gulpjs/gulp#4.0",
     "gulp-autoprefixer": "4.0.0",
     "gulp-pug": "^3.3.0",
-    "gulp-sass": "^3.1.0",
+    "gulp-sass": "^4.0.2",
     "gulp-standard": "^10.0.0",
     "gulp-typescript": "^3.1.7",
     "gulp-yarn": "^1.0.0",