diff --git a/package.json b/package.json
index a08ed24..c55d820 100644
--- a/package.json
+++ b/package.json
@@ -18,11 +18,11 @@
         "cordova-plugin-statusbar": "^2.2.1",
         "cordova-plugin-whitelist": "^1.3.1",
         "de.appplant.cordova.plugin.local-notification": "git+https://github.com/katzer/cordova-plugin-local-notifications.git",
-        "gulp": "^3.5.6",
+        "gulp": "^4.0.0",
         "gulp-concat": "^2.2.0",
         "gulp-minify-css": "^0.3.0",
         "gulp-rename": "^1.2.0",
-        "gulp-sass": "^2.0.4",
+        "gulp-sass": "^5.0.0",
         "ionic-plugin-keyboard": "^2.2.1",
         "rxjs": "^5.4.0",
         "zone.js": "^0.8.11"