diff --git a/web/package.json b/web/package.json
index 114ded1e..ba25a6e1 100644
--- a/web/package.json
+++ b/web/package.json
@@ -48,6 +48,7 @@
     "nanoid": "^3.3.4",
     "next": "12.2.5",
     "node-fetch": "3.2.4",
+    "prosemirror-state": "1.4.1",
     "react": "17.0.2",
     "react-beautiful-dnd": "13.1.1",
     "react-confetti": "6.0.1",