diff --git a/libs/report/committers/src/lib/parse-monthly.ts b/libs/report/committers/src/lib/parse-monthly.ts
index 23e59af..3c81da9 100644
--- a/libs/report/committers/src/lib/parse-monthly.ts
+++ b/libs/report/committers/src/lib/parse-monthly.ts
@@ -8,11 +8,7 @@ export function parseMonthly(startDate: Date, endDate: Date, entries: Commit[])
     end: endDate,
   });
 
-  for (const idxr in range) {
-    const idx = parseInt(idxr);
-    if (idx + 1 >= range.length) {
-      continue;
-    }
+  for (let idx = 0; idx < range.length - 1; idx++) {
     const [start, end] = [range[idx], range[idx + 1]];
     const month: MonthlyData = {
       month: format(start, 'LLLL yyyy'),