diff --git a/types/sequelize/index.d.ts b/types/sequelize/index.d.ts
index c847c073b8..2772eaa905 100644
--- a/types/sequelize/index.d.ts
+++ b/types/sequelize/index.d.ts
@@ -13,6 +13,7 @@
 //                 Florian Oellerich <https://github.com/Raigen>
 //                 Todd Bealmear <https://github.com/todd>
 //                 Nick Schultz <https://github.com/nrschultz>
+//                 Thomas Breleur <https://github.com/thomas-b>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -3270,6 +3271,11 @@ declare namespace sequelize {
         paranoid?: boolean;
 
         all?: boolean | string;
+
+        /**
+         * if true, it will also eager load the relations of the child models, recursively.
+         */
+        nested?: boolean;
     }
 
     /**
diff --git a/types/sequelize/sequelize-tests.ts b/types/sequelize/sequelize-tests.ts
index 3d2bbdfe05..c3bd9e63af 100644
--- a/types/sequelize/sequelize-tests.ts
+++ b/types/sequelize/sequelize-tests.ts
@@ -933,6 +933,7 @@ User.findAll( { include : [{ all : 'HasMany', attributes : ['name'] }] } );
 User.findAll( { include : [{ all : true }, { model : User, attributes : ['id'] }] } );
 User.findAll( { include : [{ all : 'BelongsTo' }] } );
 User.findAll( { include : [{ all : true }] } );
+User.findAll( { include : [{ nested : true }] } );
 User.findAll( { where : { username : 'barfooz' }, raw : true } );
 User.findAll( { where : { name : 'worker' }, include : [{ model : User, as : 'ToDos' }] } );
 User.findAll( { where : { user_id : 1 }, attributes : ['a', 'b'], include : [{ model : User, attributes : ['c'] }] } );