diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index accb21fc44..432b1bb68a 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -78222,10 +78222,17 @@
             }
           },
           "data": {
-            "type": "array",
-            "items": {
-              "type": "string"
-            }
+            "oneOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                }
+              }
+            ]
           }
         }
       },
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 023cb6817e..ff1d368556 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -179915,14 +179915,26 @@
           "name": "data",
           "required": false,
           "type": {
-            "kind": "array_of",
-            "value": {
-              "kind": "instance_of",
-              "type": {
-                "name": "string",
-                "namespace": "_builtins"
+            "kind": "union_of",
+            "items": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "string",
+                  "namespace": "_builtins"
+                }
+              },
+              {
+                "kind": "array_of",
+                "value": {
+                  "kind": "instance_of",
+                  "type": {
+                    "name": "string",
+                    "namespace": "_builtins"
+                  }
+                }
               }
-            }
+            ]
           }
         }
       ],
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 3d2fcff682..313f8e8c7f 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -16827,7 +16827,7 @@ export interface NodesInfoNodeInfoPath {
   logs?: string
   home?: string
   repo?: string[]
-  data?: string[]
+  data?: string | string[]
 }
 
 export interface NodesInfoNodeInfoRepositories {
diff --git a/specification/nodes/info/types.ts b/specification/nodes/info/types.ts
index efbba52df9..1d47901284 100644
--- a/specification/nodes/info/types.ts
+++ b/specification/nodes/info/types.ts
@@ -159,7 +159,7 @@ export class NodeInfoPath {
   logs?: string
   home?: string
   repo?: string[]
-  data?: string[]
+  data?: string | string[]
 }
 
 export class NodeInfoRepositories {