diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index 68498e0257..9f547371c4 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -78340,10 +78340,17 @@
             }
           },
           "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 04c7b94a24..0639333fe0 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -180270,14 +180270,26 @@
           "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 41b3752448..d37fa536be 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -16855,7 +16855,7 @@ 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 {