diff --git a/package.json b/package.json
index 899ceaf..5c1d17d 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,10 @@
   "description": "Webmention support for WordPress posts",
   "main": "webmention.php",
   "devDependencies": {
+    "@wordpress/components": "^28.0.0",
+    "@wordpress/data": "^10.0.0",
+    "@wordpress/env": "^10.10.0",
+    "@wordpress/icons": "^10.10.0"
   },
   "repository": {
     "type": "git",