diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3bd646021..80fa0fc65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 -   `@lumx/react` no long depend on `moment` or `moment-range` to generate the date picker.
+-   Deprecated `@lumx/core/js/date-picker` functions that **will be removed in the next major version** along with `moment` and `moment-range`.
 
 ## [3.5.3][] - 2023-08-30
 
diff --git a/packages/lumx-core/src/js/date-picker.ts b/packages/lumx-core/src/js/date-picker.ts
index 2f41e6055..1d223d34d 100644
--- a/packages/lumx-core/src/js/date-picker.ts
+++ b/packages/lumx-core/src/js/date-picker.ts
@@ -16,6 +16,8 @@ interface AnnotatedDate {
 /**
  * Get the list of days in a week based on locale.
  *
+ * @deprecated will be removed in next major version along with the removal of moment (no replacement planned)
+ *
  * @param  locale The locale using to generate the order of days in a week.
  * @return The list of days in a week based on locale.
  */
@@ -26,6 +28,8 @@ export function getWeekDays(locale: string): Moment[] {
 /**
  * Get month calendar based on locale and start date.
  *
+ * @deprecated will be removed in next major version along with the removal of moment (no replacement planned)
+ *
  * @param  locale        The locale using to generate the order of days in a week.
  * @param  selectedMonth The selected month.
  * @return The list of days in a week based on locale.
@@ -44,6 +48,8 @@ export function getMonthCalendar(locale: string, selectedMonth?: Moment): Moment
  * Get month calendar based on locale and start date.
  * Each day is annotated to know if they are displayed and/or clickable.
  *
+ * @deprecated will be removed in next major version along with the removal of moment (no replacement planned)
+ *
  * @param  locale        The locale using to generate the order of days in a week.
  * @param  minDate       The first selectable date.
  * @param  maxDate       The last selectable date.