vulnerability solved

gulpfile.js

@@ -57,4 +57,4 @@ gulp.task('watch', function() {
 });
 
 // Default Task
-gulp.task('default', ['browser-sync', 'watch']);
\ No newline at end of file
+gulp.task('default', gulp.series('browser-sync', 'watch'));
\ No newline at end of file

package.json

@@ -31,11 +31,11 @@
   },
   "homepage": "https://github.com/puikinsh/gentelella#readme",
   "devDependencies": {
-    "browser-sync": "^2.12.10",
-    "gulp": "^3.9.1",
+    "browser-sync": "^2.26.7",
+    "gulp": "^4.0.2",
     "gulp-autoprefixer": "^3.1.0",
     "gulp-concat": "^2.6.0",
-    "gulp-rename": "^1.2.2",
+    "gulp-rename": "^1.4.0",
     "gulp-ruby-sass": "^2.0.6",
     "gulp-uglify": "^1.5.3"
   }