diff --git a/package.json b/package.json
index 6dcc345..910270d 100644
--- a/package.json
+++ b/package.json
@@ -75,6 +75,6 @@
     "firebase-admin": "^9.0.0"
   },
   "peerDependencies": {
-    "boardgame.io": ">=0.40.0"
+    "boardgame.io": ">=0.40 <0.42"
   }
 }