diff --git a/package.json b/package.json
index 53b56424..cc12fc52 100644
--- a/package.json
+++ b/package.json
@@ -159,6 +159,7 @@
     "@cloudcmd/stub": "^5.0.0",
     "@iocmd/wait": "^2.1.0",
     "@putout/eslint-flat": "^4.0.0",
+    "@supertape/loader-css": "^1.0.0",
     "@types/node-fetch": "^2.6.11",
     "auto-globals": "^4.0.0",
     "babel-loader": "^10.0.0",