diff --git a/features/overlay.yml b/features/overlay.yml
index 747fa3c6f5e..21bc5fcd5ef 100644
--- a/features/overlay.yml
+++ b/features/overlay.yml
@@ -4,3 +4,5 @@ spec: https://drafts.csswg.org/css-position-4/#overlay
 group: css
 compat_features:
   - css.properties.overlay
+  - css.properties.overlay.auto
+  - css.properties.overlay.none
diff --git a/features/overlay.yml.dist b/features/overlay.yml.dist
index 30d85d9d3f4..328105740ec 100644
--- a/features/overlay.yml.dist
+++ b/features/overlay.yml.dist
@@ -9,3 +9,5 @@ status:
     edge: "117"
 compat_features:
   - css.properties.overlay
+  - css.properties.overlay.auto
+  - css.properties.overlay.none