diff --git a/.changeset/slow-flies-exist.md b/.changeset/slow-flies-exist.md
new file mode 100644
index 000000000..bbab75068
--- /dev/null
+++ b/.changeset/slow-flies-exist.md
@@ -0,0 +1,5 @@
+---
+'@shopify/mini-oxygen': patch
+---
+
+Bump undici package to 6.21.1