diff --git a/__tests__/priceService.test.ts b/__tests__/priceService.test.ts
index b66c64d..ad54796 100644
--- a/__tests__/priceService.test.ts
+++ b/__tests__/priceService.test.ts
@@ -35,7 +35,7 @@ describe('Price Service', () => {
 
   const mockCachedData: ItemPriceData = {
     sku: mockSku,
-    update: new Date(Date.now() - 15 * 60 * 1000), // 15 minutes ago
+    update: new Date(Date.now() - 15 * 60 * 1000).getTime(), // 15 minutes ago
     ttl: mockTtl,
     keys: 1,
     metal: 21.11,
@@ -56,7 +56,7 @@ describe('Price Service', () => {
   })
 
   test('fetchPrice fetches new data when cache is expired', async () => {
-    const expiredCache: ItemPriceData = { ...mockCachedData, update: new Date(Date.now() - 2 * mockTtl) };
+    const expiredCache: ItemPriceData = { ...mockCachedData, update: new Date(Date.now() - 2 * mockTtl).getTime() };
     (getStorageValue as jest.Mock).mockResolvedValue(expiredCache);
     (priceUsingPricesTF as jest.Mock).mockResolvedValue(mockPriceResponse)