diff --git a/lib/internal/blob.js b/lib/internal/blob.js
index 450ad593f44507..4ff2b0e1e7051b 100644
--- a/lib/internal/blob.js
+++ b/lib/internal/blob.js
@@ -312,6 +312,9 @@ class Blob {
     return dec.decode(await this.arrayBuffer());
   }
 
+  /**
+   * @returns {Promise<Uint8Array>}
+   */
   bytes() {
     if (!isBlob(this))
       throw new ERR_INVALID_THIS('Blob');