diff --git a/sequelize/sequelize.d.ts b/sequelize/sequelize.d.ts
index 9b5e935bff..46a0ba41a0 100644
--- a/sequelize/sequelize.d.ts
+++ b/sequelize/sequelize.d.ts
@@ -5706,12 +5706,12 @@ declare module "sequelize" {
             /**
              * Commit the transaction
              */
-            commit() : Transaction;
+            commit() : Promise<void>;
 
             /**
              * Rollback (abort) the transaction
              */
-            rollback() : Transaction;
+            rollback() : Promise<void>;
 
         }