diff --git a/specs/common/schemas/IndexSettings.yml b/specs/common/schemas/IndexSettings.yml
index 3694bd5cb6..4ff2d71493 100644
--- a/specs/common/schemas/IndexSettings.yml
+++ b/specs/common/schemas/IndexSettings.yml
@@ -64,6 +64,11 @@ baseIndexSettings:
       default: []
       x-categories:
         - Ranking
+    virtual:
+      type: boolean
+      description: Only present if the index is a [virtual replica](https://www.algolia.com/doc/guides/managing-results/refine-results/sorting/how-to/sort-an-index-alphabetically/#virtual-replicas).
+      x-categories:
+        - Ranking
     paginationLimitedTo:
       type: integer
       example: 100
@@ -1031,6 +1036,8 @@ value:
       $ref: '#/order'
     sortRemainingBy:
       $ref: '#/sortRemainingBy'
+    hide:
+      $ref: '#/hide'
 
 order:
   description: |
@@ -1041,6 +1048,12 @@ order:
   items:
     type: string
 
+hide:
+  description: Hide facet values.
+  type: array
+  items:
+    type: string
+
 sortRemainingBy:
   description: |
     Order of facet values that aren't explicitly positioned with the `order` setting.