diff --git a/conf.yaml b/conf.yaml
index 70631da84908b..b7ce42e7c9137 100644
--- a/conf.yaml
+++ b/conf.yaml
@@ -932,9 +932,10 @@ contents:
                 path:   docs/asciidoc
           - title:      Elastic Common Schema (ECS) Reference
             prefix:     en/ecs
+            # The omission of 8.12 is intentional, please do not add
             current:    8.11
-            branches:   [  {main: master}, 8.12, 8.11, 8.10, 8.9, 8.8, 8.7, 8.6, 8.5, 8.4, 8.3, 8.2, 8.1, 8.0, 1.12, 1.11, 1.10, 1.9, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0 ]
-            live:       [ main, 8.12, 8.11, 8.10, 8.9, 8.8, 8.7, 8.6, 8.5, 8.4, 1.12 ]
+            branches:   [  {main: master}, 8.11, 8.10, 8.9, 8.8, 8.7, 8.6, 8.5, 8.4, 8.3, 8.2, 8.1, 8.0, 1.12, 1.11, 1.10, 1.9, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0 ]
+            live:       [ main, 8.11, 8.10, 8.9, 8.8, 1.12 ]
             index:      docs/index.asciidoc
             chunk:      2
             tags:       Elastic Common Schema (ECS)/Reference