diff --git a/src/resources/files/files.ts b/src/resources/files/files.ts
index 0869209..2f6901e 100644
--- a/src/resources/files/files.ts
+++ b/src/resources/files/files.ts
@@ -426,6 +426,11 @@ export interface Folder {
    */
   createdAt?: string;
 
+  /**
+   * An object with custom metadata for the folder.
+   */
+  customMetadata?: { [key: string]: unknown };
+
   /**
    * Unique identifier of the asset.
    */