diff --git a/package.json b/package.json
index bbc1a68e..ba7c5431 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,7 @@
     "demo:cloudflare:start": "cd demo/cloudflare-workers && yarn dev"
   },
   "private": true,
+  "packageManager": "yarn@4.10.3+sha512.c38cafb5c7bb273f3926d04e55e1d8c9dfa7d9c3ea1f36a4868fa028b9e5f72298f0b7f401ad5eb921749eb012eb1c3bb74bf7503df3ee43fd600d14a018266f",
   "workspaces": [
     "packages/*",
     "demo/*"
diff --git a/yarn.lock b/yarn.lock
index 809a61b6..bb421d8d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,7 +2,7 @@
 # Manual changes might be lost - proceed with caution!
 
 __metadata:
-  version: 9
+  version: 8
   cacheKey: 10c0
 
 "@alloc/quick-lru@npm:^5.2.0":