diff --git a/components/transaction/transactionService.js b/components/transaction/transactionService.js
index 88cbc4b..49d4f5f 100644
--- a/components/transaction/transactionService.js
+++ b/components/transaction/transactionService.js
@@ -197,6 +197,7 @@ const indexAllTransactions = async () => {
                 source: transaction.source,
                 value: transaction.value,
                 description: transaction.description,
+                createdAt: Math.floor(new Date(transaction.createdAt).getTime() / 1000), // Store as timestamp in seconds
             }
 
             documents.push(data)
@@ -219,6 +220,7 @@ const getTypeSenseSchema = () => {
             { name: 'source', type: 'string', facet: false },
             { name: 'value', type: 'int64', facet: false },
             { name: 'description', type: 'string', facet: false, infix: true },
+            { name: 'createdAt', type: 'int64', facet: false },
         ],
         default_sorting_field: 'createdAt',
     }