diff --git a/package.json b/package.json
index f9a1b47..aa446bd 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "preinstall": "npx only-allow pnpm"
   },
   "dependencies": {
+    "rehype-external-links": "^3.0.0",
     "@astrojs/check": "^0.9.4",
     "@astrojs/rss": "^4.0.12",
     "@astrojs/sitemap": "^3.4.2",