diff --git a/output/schema/schema.json b/output/schema/schema.json
index bdb002ce07..5e65dd181f 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -43293,15 +43293,15 @@
         "items": [
           {
             "kind": "literal_value",
-            "value": "\"Index Lifecycle Management\""
+            "value": "Index Lifecycle Management"
           },
           {
             "kind": "literal_value",
-            "value": "\"Data Stream Lifecycle\""
+            "value": "Data Stream Lifecycle"
           },
           {
             "kind": "literal_value",
-            "value": "\"Unmanaged\""
+            "value": "Unmanaged"
           }
         ],
         "kind": "union_of"
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index eef0681a56..1b03bc60b0 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 fd7a37a578..e0e080be03 100644
--- a/specification/_types/common.ts
+++ b/specification/_types/common.ts
@@ -72,9 +72,9 @@ export type Metrics = string | string[]
 export type ClusterAlias = string
 
 export type ManagedBy =
-  | "Index Lifecycle Management"
-  | "Data Stream Lifecycle"
-  | "Unmanaged";
+  | 'Index Lifecycle Management'
+  | 'Data Stream Lifecycle'
+  | 'Unmanaged'
 
 export type Name = string
 export type Names = Name | Name[]