diff --git a/src/models/sake.ts b/src/models/sake.ts
index ec107ff..dfc1860 100644
--- a/src/models/sake.ts
+++ b/src/models/sake.ts
@@ -1,5 +1,5 @@
 import { ObjectId } from 'mongodb'
-import { SakeDesignation, SakeStarter, Vintage } from '../types'
+import { SakeDesignation, SakeStarter, VintageOptions } from '../types'
 import { Alpha2Code } from 'i18n-iso-countries'
 import { CurrencyCode } from 'currency-codes-ts/dist/types'
 
@@ -18,7 +18,7 @@ export class Sake {
     public yeastStrain: number,
     public alcohol: number, // alcohol percentage
     public standardDrinks100ml: number, // number representing an amount of standard drinks per bottle per 100ml
-    public vintage: Vintage, // year, nv (non-vintage) or mv (multi-vintage)
+    public vintage: number | VintageOptions, // year, nv (non-vintage) or mv (multi-vintage)
     public RRPamount: number, // 20
     public RRPcurrency: CurrencyCode, // USD
     public description: string, // detailed description of the product
diff --git a/src/models/spirit.ts b/src/models/spirit.ts
index 45c0d53..864457d 100644
--- a/src/models/spirit.ts
+++ b/src/models/spirit.ts
@@ -1,5 +1,5 @@
 import { ObjectId } from 'mongodb'
-import { SpiritType, SpiritVariant, Ingredient, Vintage } from '../types'
+import { SpiritType, SpiritVariant, Ingredient, VintageOptions } from '../types'
 import { Alpha2Code } from 'i18n-iso-countries'
 import { CurrencyCode } from 'currency-codes-ts/dist/types'
 
@@ -17,7 +17,7 @@ export class Spirit {
     public ingredients: Ingredient[], // an array of ingredients(flavouring)
     public alcohol: number, // alcohol percentage
     public standardDrinks100ml: number, // number representing an amount of standard drinks per bottle
-    public vintage: Vintage, // year, nv (non-vintage) or mv (multi-vintage)
+    public vintage: number | VintageOptions, // year, nv (non-vintage) or mv (multi-vintage)
     public RRPamount: number, // 20
     public RRPcurrency: CurrencyCode, // USD
     public description: string, // detailed description of the product