diff --git a/deno.json b/deno.json
index 8159ad4..b2a10fa 100644
--- a/deno.json
+++ b/deno.json
@@ -8,7 +8,8 @@
 		"build": "deno run -A dev.ts build",
 		"preview": "deno run -A main.ts",
 		"update": "deno run -A -r https://fresh.deno.dev/update .",
-		"serve": "deno task preview"
+		"serve": "deno task preview",
+		"dev:add_package": "deno run --allow-net --allow-read=./deno.json --allow-write=./deno.json,./packages --allow-run=git,deno ./scripts/add_package.ts"
 	},
 	"fmt": {
 		"singleQuote": true,
diff --git a/scripts/add_package.ts b/scripts/add_package.ts
new file mode 100644
index 0000000..ca09fdd
--- /dev/null
+++ b/scripts/add_package.ts
@@ -0,0 +1,78 @@
+import { join } from '$std/path/join.ts'
+import { ensureDir } from '$std/fs/mod.ts'
+import denoJson from '../deno.json' with { type: 'json' }
+
+// Get package from cli
+const baseRepo = 'https://git.cohabit.fr/'
+const packageRepoAndTag = Deno.args[0]
+const match = packageRepoAndTag.match(/(?<name>@\w+\/\w+)@(?<tag>\d\.\d\.\d.*)/)
+
+// Parse name and version tag
+if (match === null || match.groups === undefined) {
+	throw new SyntaxError('usage: deno task $task_name @scope/name@x.x.x')
+}
+const { name, tag } = match.groups
+const repoUrl = new URL(`${name.slice(1)}.git`, baseRepo)
+
+// Setup destination and remove old versions
+const fsName = name.replace('/', '.')
+const packageBase = join(Deno.cwd(), 'packages')
+const destinationBase = join(packageBase, fsName)
+const destinationCurrent = `${destinationBase}@${tag}`
+
+// Create base dir if needed
+await ensureDir(packageBase)
+
+// Remove old versions
+for await (const entry of Deno.readDir(packageBase)) {
+	if (entry.isDirectory && entry.name.startsWith(fsName)) {
+		Deno.remove(join(packageBase, entry.name), {
+			recursive: true,
+		})
+	}
+}
+
+// Clone repo @ tag
+const git = new Deno.Command('git', {
+	args: [
+		'clone',
+		repoUrl.href,
+		'--branch',
+		tag,
+		'--single-branch',
+		'--depth',
+		'1',
+		destinationCurrent,
+	],
+	stderr: 'inherit',
+	stdout: 'inherit',
+})
+await git.output()
+
+// Get workspaces
+// @ts-ignore maybe undefined
+const workspaces: string[] = denoJson['workspaces'] ?? []
+// Update deno.json
+const newDenoJson = {
+	...denoJson,
+	imports: {
+		...denoJson.imports,
+		[`${name}/`]: `./packages/${fsName}@${tag}/`,
+	},
+	workspaces: [
+		...workspaces.filter((workspace) =>
+			workspace.startsWith(`packages/${fsName}`) === false
+		),
+		`packages/${fsName}@${tag}`,
+	],
+}
+
+// Update deno.json file
+await Deno.writeTextFile('../deno.json', JSON.stringify(newDenoJson))
+
+const denoFmt = new Deno.Command('deno', {
+	args: ['fmt', 'deno.json'],
+	stderr: 'inherit',
+	stdout: 'inherit',
+})
+await denoFmt.output()