diff --git a/package.json b/package.json
index 5a099c26f2..85367da918 100644
--- a/package.json
+++ b/package.json
@@ -7,9 +7,9 @@
 		"url": "https://github.com/misskey-dev/misskey.git"
 	},
 	"packageManager": "yarn@3.2.1",
+	"workspaces": ["client", "server", "sw"],
 	"private": true,
 	"scripts": {
-		"postinstall": "node ./scripts/install-packages.js",
 		"build": "node ./scripts/build.js",
 		"start": "cd packages/backend && node --experimental-json-modules ./built/index.js",
 		"start:test": "cd packages/backend && cross-env NODE_ENV=test node --experimental-json-modules ./built/index.js",