diff --git a/specification/_global/search_shards/SearchShardsResponse.ts b/specification/_global/search_shards/SearchShardsResponse.ts
index 8c217de0ab..a0c69c8235 100644
--- a/specification/_global/search_shards/SearchShardsResponse.ts
+++ b/specification/_global/search_shards/SearchShardsResponse.ts
@@ -56,6 +56,7 @@ class SearchShardsNodeAttributes {
   roles: NodeRoles
   version: VersionString
   min_index_version: integer
+  min_read_only_index_version: integer
   max_index_version: integer
 }
 
diff --git a/specification/ml/_types/DiscoveryNode.ts b/specification/ml/_types/DiscoveryNode.ts
index 578179f9cb..9b64457611 100644
--- a/specification/ml/_types/DiscoveryNode.ts
+++ b/specification/ml/_types/DiscoveryNode.ts
@@ -33,6 +33,7 @@ export class DiscoveryNodeContent {
   roles: string[]
   version: VersionString
   min_index_version: integer
+  min_read_only_index_version: integer
   max_index_version: integer
 }