diff --git a/doc/topics/releases/version_numbers.rst b/doc/topics/releases/version_numbers.rst
index 7c9067290d..4ae08e664c 100644
--- a/doc/topics/releases/version_numbers.rst
+++ b/doc/topics/releases/version_numbers.rst
@@ -36,6 +36,8 @@ Assigned codenames:
 - Nitrogen: ``2017.7.0``
 - Oxygen: ``TBD``
 - Fluorine: ``TBD``
+- Neon: ``TBD``
+- Sodium: ``TBD``
 
 Example
 -------