diff --git a/.changeset/breezy-kangaroos-pay.md b/.changeset/breezy-kangaroos-pay.md
new file mode 100644
index 000000000..156a7437c
--- /dev/null
+++ b/.changeset/breezy-kangaroos-pay.md
@@ -0,0 +1,5 @@
+---
+"@turnkey/webauthn-stamper": patch
+---
+
+Make sha256 computation synchronous to resolve ios passkey prompt issues