diff --git a/api-ref/source/v1/index.rst b/api-ref/source/v1/index.rst
index fa991bf216a..7fc691a9b00 100644
--- a/api-ref/source/v1/index.rst
+++ b/api-ref/source/v1/index.rst
@@ -1,8 +1,8 @@
 :tocdepth: 2
 
-====================
-Block Storage API V1
-====================
+=================================
+Block Storage API V1 (DEPRECATED)
+=================================
 
 .. rest_expand_all::