diff --git a/output/schema/schema.json b/output/schema/schema.json
index 5e65dd181f..ba88a04d0a 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -43297,7 +43297,7 @@
           },
           {
             "kind": "literal_value",
-            "value": "Data Stream Lifecycle"
+            "value": "Data stream lifecycle"
           },
           {
             "kind": "literal_value",
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 1b03bc60b0..00bb40a084 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -2354,7 +2354,7 @@ export type Level = 'cluster' | 'indices' | 'shards'
 
 export type LifecycleOperationMode = 'RUNNING' | 'STOPPING' | 'STOPPED'
 
-export type ManagedBy = 'Index Lifecycle Management' | 'Data Stream Lifecycle' | 'Unmanaged'
+export type ManagedBy = 'Index Lifecycle Management' | 'Data stream lifecycle' | 'Unmanaged'
 
 export type MapboxVectorTiles = ArrayBuffer
 
diff --git a/specification/_types/common.ts b/specification/_types/common.ts
index e0e080be03..60aa713a83 100644
--- a/specification/_types/common.ts
+++ b/specification/_types/common.ts
@@ -73,7 +73,7 @@ export type ClusterAlias = string
 
 export type ManagedBy =
   | 'Index Lifecycle Management'
-  | 'Data Stream Lifecycle'
+  | 'Data stream lifecycle'
   | 'Unmanaged'
 
 export type Name = string