diff --git a/doc/api/cluster.md b/doc/api/cluster.md
index 93723114ab8835..7ab57b02a5a262 100644
--- a/doc/api/cluster.md
+++ b/doc/api/cluster.md
@@ -850,6 +850,8 @@ added: v0.8.1
 deprecated: v16.0.0
 -->
 
+> Stability: 0 - Deprecated
+
 Deprecated alias for [`cluster.isPrimary`][].
 
 ## `cluster.isPrimary`
@@ -959,6 +961,8 @@ changes:
     description: The `stdio` option is supported now.
 -->
 
+> Stability: 0 - Deprecated
+
 Deprecated alias for [`.setupPrimary()`][].
 
 ## `cluster.setupPrimary([settings])`