diff --git a/package.json b/package.json
index ad58b7566..d82f4e96c 100644
--- a/package.json
+++ b/package.json
@@ -63,6 +63,7 @@
     "geist": "^1.3.1",
     "katex": "^0.16.25",
     "lucide-react": "^0.446.0",
+    "matter-js": "^0.20.0",
     "nanoid": "^5.0.8",
     "next": "^16.0.9",
     "next-auth": "^5.0.0-beta.30",