diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "babel-register": "^6.7.2",
     "browser-sync": "^2.10.0",
     "gulp": "github:gulpjs/gulp#4.0",
-    "gulp-autoprefixer": "^3.1.0",
+    "gulp-autoprefixer": "^6.0.0",
     "gulp-babel": "^6.1.2",
     "gulp-clean-css": "^3.3.1",
     "gulp-cli": "^2.0.1",
@@ -31,7 +31,7 @@
     "gulp-if": "^2.0.0",
     "gulp-imagemin": "^4.1.0",
     "gulp-load-plugins": "^1.1.0",
-    "gulp-sass": "^2.1.0",
+    "gulp-sass": "^4.0.1",
     "gulp-sourcemaps": "^1.6.0",
     "gulp-uglify": "^1.2.0",
     "gulp-uncss": "^1.0.1",