diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 6e4a2d5f5c9a..64c1cf492ffc 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -75,7 +75,7 @@ Non-comprehensive list of changes in this release
 New Compiler Flags
 ------------------
 
-The option ....
+- --autocomplete was implemented to obtain a list of flags and its arguments. This is used for shell autocompletion.
 
 Deprecated Compiler Flags
 -------------------------