diff --git a/cron/TripsWorker.js b/cron/TripsWorker.js
index e65c16e..5c0f4a0 100644
--- a/cron/TripsWorker.js
+++ b/cron/TripsWorker.js
@@ -162,9 +162,9 @@ async function job() {
 
 async function tripGrouping() {
 	console.log("Trip grouping job executed:", moment().format("YYYY-MM-DD HH:mm:ss"))
-	for (let i = 0; i <= 12; i++) {
-		const lasYearDate = moment().subtract(1, "years")
-		const histMonth = lasYearDate.clone().add(i, "months")
+	for (let i = 0; i <= 1; i++) {
+		const lastMonth = moment().subtract(1, "months")
+		const histMonth = lastMonth.clone().add(i, "months")
 		const histYy = histMonth.format("YY")
 		const histMm = histMonth.format("MM")
 		const histTableName = `tracks_${histYy}${histMm}`