diff --git a/index.js b/index.js
index ccd80ec..ddb90e9 100755
--- a/index.js
+++ b/index.js
@@ -1,11 +1,13 @@
 #!/usr/bin/env node
 import process from 'node:process'
+import {remark} from 'remark'
 import {createUnifiedLanguageServer} from 'unified-language-server'
 
 process.title = 'remark-language-server'
 
 createUnifiedLanguageServer({
   configurationSection: 'remark',
+  defaultProcessor: remark,
   ignoreName: '.remarkignore',
   packageField: 'remarkConfig',
   pluginPrefix: 'remark',
diff --git a/package.json b/package.json
index 8d26973..27296db 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "index.js"
   ],
   "dependencies": {
+    "remark": "^15.0.0",
     "unified-language-server": "^4.0.0"
   },
   "devDependencies": {