diff --git a/.changeset/tasty-bobcat-check.md b/.changeset/tasty-bobcat-check.md
new file mode 100644
index 000000000000..0510817581dd
--- /dev/null
+++ b/.changeset/tasty-bobcat-check.md
@@ -0,0 +1,5 @@
+---
+'ai': patch
+---
+
+StreamData: add `annotations` and `appendMessageAnnotation` support
\ No newline at end of file