diff --git a/changelog/v1.json b/changelog/v1.json
index 5db6cb4dc2cb4..35bc68d765ac6 100644
--- a/changelog/v1.json
+++ b/changelog/v1.json
@@ -1,4 +1,11 @@
 [
+  {
+    "children": {
+      "improvements": ["Optimize smooth output."]
+    },
+    "date": "2025-02-28",
+    "version": "1.66.4"
+  },
   {
     "children": {
       "fixes": ["Fix fetch assistants plugin error."]