update changeset

.changeset/odd-guests-beam.md

@@ -2,4 +2,10 @@
 "wrangler": patch
 ---
 
-fix: fix broken local Durable Object proxies
+fix: fix broken Durable Object local proxying (when no `cf` property is present)
+
+A regression was introduced in wrangler 3.46.0 (https://github.com/cloudflare/workers-sdk/pull/5215)
+which made it so that missing `Request#cf` properties are serialized as `"undefined"`, this in turn
+throws a syntax parse error when such values are parsed via `JSON.parse` breaking the communication
+with Durable Object local proxies. Fix such issue by serializing missing `Request#cf` properties as
+`"{}"` instead.