diff --git a/changelog/15104.txt b/changelog/15104.txt
new file mode 100644
index 0000000000000..39ea1f577eb97
--- /dev/null
+++ b/changelog/15104.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+sdk: Fix OpenApi spec generator to properly convert TypeInt64 to OAS supported int64
+```