diff --git a/lib/workers/master b/lib/workers/master
index e24956f..809f53b 100644
--- a/lib/workers/master
+++ b/lib/workers/master
@@ -95,7 +95,7 @@ master() {
 			return 0
 		elif (( active == 0 && ready == 0 ))
 		then
-			dumpfile=tasks-$(date +%Y%m%d%H%M%S).csv
+			dumpfile="$tmpdir/tasks-$(date -Iseconds).csv"
 			cat <<-EOF