diff --git a/package.json b/package.json
index ec6a567..3a3ad78 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
     "@types/mdast": "^4.0.0",
     "hast-util-sanitize": "^5.0.0",
     "mdast-util-to-hast": "^13.0.0",
+    "hast-util-to-html": "^9.0.0",
     "unified": "^11.0.0"
   },
   "devDependencies": {
@@ -48,7 +49,6 @@
     "c8": "^8.0.0",
     "commonmark.json": "^0.30.0",
     "hast-util-from-html": "^2.0.0",
-    "hast-util-to-html": "^9.0.0",
     "prettier": "^3.0.0",
     "remark-cli": "^11.0.0",
     "remark-frontmatter": "^5.0.0",