diff --git a/src/api/arm.ts b/src/api/arm.ts
index 85d6013..d1f2573 100644
--- a/src/api/arm.ts
+++ b/src/api/arm.ts
@@ -10,8 +10,8 @@ const armService = () => {
   const endpoint = getConfigValue('dry-wash.api');
 
   const fetchOrders = async ({ date }: { date: Date }) => {
-    let startDate = dayjs(date).startOf('day').toISOString();
-    let endDate = dayjs(date).endOf('day').toISOString();
+    const startDate = dayjs(date).startOf('day').toISOString();
+    const endDate = dayjs(date).endOf('day').toISOString();
 
     const response = await fetch(`${endpoint}${ArmEndpoints.ORDERS}`, {
       method: 'POST',