diff --git a/.changeset/heavy-houses-pay.md b/.changeset/heavy-houses-pay.md
new file mode 100644
index 0000000000..8c1b2342ac
--- /dev/null
+++ b/.changeset/heavy-houses-pay.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+breaking: avoid mutations to underlying proxied object with $state
diff --git a/.changeset/short-starfishes-beg.md b/.changeset/short-starfishes-beg.md
new file mode 100644
index 0000000000..dedbfbfeef
--- /dev/null
+++ b/.changeset/short-starfishes-beg.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+breaking: remove $state.is rune