diff --git a/.changeset/dirty-oranges-search.md b/.changeset/dirty-oranges-search.md
new file mode 100644
index 0000000..210a177
--- /dev/null
+++ b/.changeset/dirty-oranges-search.md
@@ -0,0 +1,5 @@
+---
+"@open-frames/proxy": patch
+---
+
+fix: handle errors and return correct CORS headers on error responses