diff --git a/.changeset/weak-flowers-sit.md b/.changeset/weak-flowers-sit.md
new file mode 100644
index 0000000000..8b6d9c4469
--- /dev/null
+++ b/.changeset/weak-flowers-sit.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+patch structuredClone in dev to clone $state proxies