diff --git a/.changeset/light-rivers-jump.md b/.changeset/light-rivers-jump.md
new file mode 100644
index 0000000000..9258401e8a
--- /dev/null
+++ b/.changeset/light-rivers-jump.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+Store deriveds old value before updating them for consistency with directly assigned sources when reading in teardown functions