diff --git a/.prettierignore b/.prettierignore
index 61182fc..dd44972 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,3 +1 @@
-out/
 *.md
-.vscode-test/
diff --git a/package.json b/package.json
index d6b425d..ce4c324 100644
--- a/package.json
+++ b/package.json
@@ -33,18 +33,19 @@
     "vscode": "^1.67.0"
   },
   "devDependencies": {
+    "@types/node": "^20.0.0",
     "@types/vscode": "^1.0.0",
     "@vscode/test-electron": "^2.0.0",
     "@vscode/vsce": "^2.0.0",
-    "esbuild": "^0.16.0",
-    "ovsx": "^0.7.0",
-    "prettier": "^2.0.0",
+    "esbuild": "^0.19.0",
+    "ovsx": "^0.8.0",
+    "prettier": "^3.0.0",
     "remark-cli": "^11.0.0",
     "remark-language-server": "^2.0.0",
     "remark-preset-wooorm": "^9.0.0",
-    "typescript": "^4.0.0",
+    "typescript": "^5.0.0",
     "vscode-languageclient": "^8.0.0",
-    "xo": "^0.53.0"
+    "xo": "^0.56.0"
   },
   "scripts": {
     "vscode:prepublish": "npm run build",
diff --git a/test/index.test.js b/test/index.test.js
index 55e2f49..4f39a9d 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -1,28 +1,23 @@
-const assert = require('node:assert')
+const assert = require('node:assert/strict')
 const fs = require('node:fs/promises')
 const path = require('node:path')
-
+const {test} = require('node:test')
 const {commands, extensions, window, workspace} = require('vscode')
 
 module.exports.run = async () => {
   const filePath = path.join(__dirname, 'test.md')
-  try {
-    const ext = extensions.getExtension('unifiedjs.vscode-remark')
-    await ext?.activate()
 
+  const ext = extensions.getExtension('unifiedjs.vscode-remark')
+  await ext?.activate()
+
+  await test('use the language server', async () => {
     await fs.writeFile(filePath, '- remark\n- lsp\n- vscode\n')
     const doc = await workspace.openTextDocument(filePath)
     await window.showTextDocument(doc)
     await commands.executeCommand('editor.action.formatDocument')
 
-    assert.equal(
-      doc.getText(),
-      '*   remark\n*   lsp\n*   vscode\n',
-      'format document'
-    )
-  } catch (error) {
-    throw error
-  } finally {
-    await fs.rm(filePath)
-  }
+    assert.equal(doc.getText(), '*   remark\n*   lsp\n*   vscode\n')
+  })
+
+  await fs.rm(filePath, {force: true})
 }