diff --git a/docs/ReleaseNotes/index.md b/docs/ReleaseNotes/index.md
index 6664c30..90c6d40 100644
--- a/docs/ReleaseNotes/index.md
+++ b/docs/ReleaseNotes/index.md
@@ -6,4 +6,5 @@
 ## Documents
 - [1.4.0.0](1.4.0.0.md)
 - [1.4.1.0](1.4.1.0.md)
-- [1.4.2.0](1.4.2.0.md)
\ No newline at end of file
+- [1.4.2.0](1.4.2.0.md)
+- [1.4.2.1](1.4.2.1.md)
\ No newline at end of file