diff --git a/package.json b/package.json
index 393a0cb72e..92e1382743 100644
--- a/package.json
+++ b/package.json
@@ -132,15 +132,11 @@
 	"devDependencies": {
 		"autoprefixer": "^10.2.5",
 		"cssnano": "^5.0.2",
-		"del": "^6.0.0",
 		"gulp": "^4.0.2",
+		"gulp-concat-css": "^3.1.0",
 		"gulp-postcss": "^9.0.0",
 		"gulp-rename": "^2.0.0",
-		"gulp-sass": "^4.1.0",
-		"gulp-sourcemaps": "^3.0.0",
 		"postcss": "^8.2.15",
-		"postcss-import": "^14.0.2",
-		"postcss-pxtorem": "^6.0.0",
 		"postcss-sorting": "^6.0.0",
 		"stylelint": "^13.13.1",
 		"stylelint-order": "^4.1.0",