diff --git a/types/sequelize/index.d.ts b/types/sequelize/index.d.ts
index 2642535740..eefdfa9c13 100644
--- a/types/sequelize/index.d.ts
+++ b/types/sequelize/index.d.ts
@@ -3247,6 +3247,12 @@ declare namespace sequelize {
              * https://github.com/sequelize/sequelize/blob/master/docs/docs/models-usage.md#user-content-manipulating-the-dataset-with-limit-offset-order-and-group
          */
         group?: string | string[] | Object;
+                     
+                     
+        /**
+         * Apply DISTINCT(col) for FindAndCount(all)
+         */
+        distinct?: boolean;
     }
 
     /**
diff --git a/types/sequelize/v3/index.d.ts b/types/sequelize/v3/index.d.ts
index 3f8fd0e1a4..e823a926e2 100644
--- a/types/sequelize/v3/index.d.ts
+++ b/types/sequelize/v3/index.d.ts
@@ -3211,6 +3211,11 @@ declare namespace sequelize {
              * https://github.com/sequelize/sequelize/blob/master/docs/docs/models-usage.md#user-content-manipulating-the-dataset-with-limit-offset-order-and-group
          */
         group?: string | string[] | Object;
+                     
+        /**
+         * Apply DISTINCT(col) for FindAndCount(all)
+         */
+        distinct?: boolean;
     }
 
     /**