diff --git a/app/src/main/java/de/jeanlucmakiola/calendula/ui/month/MonthScreen.kt b/app/src/main/java/de/jeanlucmakiola/calendula/ui/month/MonthScreen.kt
index 2115f57..b28aab5 100644
--- a/app/src/main/java/de/jeanlucmakiola/calendula/ui/month/MonthScreen.kt
+++ b/app/src/main/java/de/jeanlucmakiola/calendula/ui/month/MonthScreen.kt
@@ -187,7 +187,7 @@ import de.jeanlucmakiola.floret.identity.itemEnter
 import de.jeanlucmakiola.floret.identity.rememberReduceMotion
 import de.jeanlucmakiola.floret.locale.currentLocale
 import de.jeanlucmakiola.calendula.ui.common.next
-import de.jeanlucmakiola.floret.time.isoWeekNumber
+import de.jeanlucmakiola.floret.time.rowWeekNumber
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.filterNotNull
@@ -2707,7 +2707,7 @@ private fun monthChipDragModifier(
  */
 @Composable
 private fun WeekNumberGutter(weekStart: LocalDate, modifier: Modifier = Modifier) {
-    val weekNumber = remember(weekStart) { weekStart.toJavaLocalDate().isoWeekNumber() }
+    val weekNumber = remember(weekStart) { weekStart.toJavaLocalDate().rowWeekNumber() }
     val label = stringResource(R.string.week_number_label)
     val openLabel = stringResource(R.string.month_open_week, weekNumber)
     val onOpenWeek = LocalOpenWeek.current
diff --git a/app/src/main/java/de/jeanlucmakiola/calendula/ui/week/WeekScreen.kt b/app/src/main/java/de/jeanlucmakiola/calendula/ui/week/WeekScreen.kt
index 72c0999..6c2b82d 100644
--- a/app/src/main/java/de/jeanlucmakiola/calendula/ui/week/WeekScreen.kt
+++ b/app/src/main/java/de/jeanlucmakiola/calendula/ui/week/WeekScreen.kt
@@ -209,7 +209,7 @@ import de.jeanlucmakiola.calendula.ui.common.TIMELINE_CONTENT_END_INSET
 import de.jeanlucmakiola.calendula.ui.common.hourCellBlockInset
 import de.jeanlucmakiola.calendula.ui.common.hourGridCells
 import de.jeanlucmakiola.calendula.ui.common.tappedMinuteOfDay
-import de.jeanlucmakiola.floret.time.isoWeekNumber
+import de.jeanlucmakiola.floret.time.rowWeekNumber
 import kotlinx.coroutines.launch
 import kotlinx.datetime.DateTimeUnit
 import kotlinx.datetime.LocalDate
@@ -1137,7 +1137,7 @@ private fun WeekDayHeader(
  */
 @Composable
 private fun WeekNumberCell(weekStart: LocalDate, showBadge: Boolean, modifier: Modifier = Modifier) {
-    val weekNumber = remember(weekStart) { weekStart.toJavaLocalDate().isoWeekNumber() }
+    val weekNumber = remember(weekStart) { weekStart.toJavaLocalDate().rowWeekNumber() }
     Column(
         modifier = modifier
             .fillMaxWidth()
diff --git a/floret-kit b/floret-kit
index 1ff6702..8b850b5 160000
--- a/floret-kit
+++ b/floret-kit
@@ -1 +1 @@
-Subproject commit 1ff6702fe6ff1ab695157e6559ec3761ba9f01b9
+Subproject commit 8b850b5b756689b6c86ad6e77ec7fda2ad0765a2