diff --git a/package.json b/package.json
index e29237f..e0906c9 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "gulp": "^4.0.0",
     "gulp-mocha-phantomjs": "^0.12.2",
     "gulp-postcss": "^7.0.1",
-    "gulp-sass": "^3.1.0",
+    "gulp-sass": "^4.0.0",
     "gulp-shell": "^0.6.5",
     "mocha": "^5.0.0",
     "rollup": "^0.57.1",