diff --git a/internal/modules/purchases/services/purchase.service.go b/internal/modules/purchases/services/purchase.service.go
index 5703cb8e..728c0e2b 100644
--- a/internal/modules/purchases/services/purchase.service.go
+++ b/internal/modules/purchases/services/purchase.service.go
@@ -713,6 +713,12 @@ func (s *purchaseService) ApproveManagerPurchase(c *fiber.Ctx, id uint, req *val
 	}
 
 	now := time.Now().UTC()
+	poDateToSet := now
+	if req.PoDate != nil && strings.TrimSpace(*req.PoDate) != "" {
+		if parsed, parseErr := utils.ParseDateString(strings.TrimSpace(*req.PoDate)); parseErr == nil {
+			poDateToSet = parsed.UTC()
+		}
+	}
 	hasExistingPO := purchase.PoNumber != nil && strings.TrimSpace(*purchase.PoNumber) != ""
 	var generatedNumber string
 
@@ -725,7 +731,7 @@ func (s *purchaseService) ApproveManagerPurchase(c *fiber.Ctx, id uint, req *val
 				return err
 			}
 			updateData["po_number"] = code
-			updateData["po_date"] = now
+			updateData["po_date"] = poDateToSet
 			generatedNumber = code
 		}
 
@@ -770,7 +776,7 @@ func (s *purchaseService) ApproveManagerPurchase(c *fiber.Ctx, id uint, req *val
 
 	if generatedNumber != "" {
 		purchase.PoNumber = &generatedNumber
-		purchase.PoDate = &now
+		purchase.PoDate = &poDateToSet
 	}
 
 	updated, err := s.PurchaseRepo.GetByID(c.Context(), purchase.Id, s.withRelations)
diff --git a/internal/modules/purchases/validations/purchase.validation.go b/internal/modules/purchases/validations/purchase.validation.go
index a16390ef..780b2911 100644
--- a/internal/modules/purchases/validations/purchase.validation.go
+++ b/internal/modules/purchases/validations/purchase.validation.go
@@ -35,6 +35,7 @@ type ApproveStaffPurchaseRequest struct {
 type ApproveManagerPurchaseRequest struct {
 	Action string  `json:"action" validate:"required,oneof=APPROVED REJECTED"`
 	Notes  *string `json:"notes,omitempty" validate:"omitempty,max=500"`
+	PoDate *string `json:"po_date,omitempty" validate:"omitempty,datetime=2006-01-02"`
 }
 
 type ReceivePurchaseItemRequest struct {