diff --git a/src/wp-content/themes/twentytwentyone/package.json b/src/wp-content/themes/twentytwentyone/package.json
index 8746bc5831f4e..95d557dc5a49f 100644
--- a/src/wp-content/themes/twentytwentyone/package.json
+++ b/src/wp-content/themes/twentytwentyone/package.json
@@ -22,10 +22,10 @@
 		"@wordpress/stylelint-config": "^21.30.0",
 		"autoprefixer": "^10.4.19",
 		"chokidar-cli": "^3.0.0",
-		"eslint": "^8.55.0",
+		"eslint": "^9.15.0",
 		"minimist": "^1.2.8",
 		"npm-run-all": "^4.1.5",
-		"postcss": "^8.4.38",
+		"postcss": "^8.5.0",
 		"postcss-calc": "^10.0.0",
 		"postcss-cli": "^11.0.0",
 		"postcss-css-variables": "^0.19.0",
@@ -37,7 +37,7 @@
 		"postcss-nested": "^6.0.0",
 		"rtlcss": "^4.0.0",
 		"sass": "^1.77.6",
-		"stylelint": "^14.16.1",
+		"stylelint": "^16.14.0",
 		"stylelint-config-recommended-scss": "^14.0.0"
 	},
 	"rtlcssConfig": {