diff --git a/.changeset/forty-planes-learn.md b/.changeset/forty-planes-learn.md
new file mode 100644
index 00000000..e45db1a1
--- /dev/null
+++ b/.changeset/forty-planes-learn.md
@@ -0,0 +1,5 @@
+---
+'@edge-runtime/format': patch
+---
+
+fix: handle objects with null prototype