diff --git a/internal/dto/responses/task.go b/internal/dto/responses/task.go
index 3520dad..090981c 100644
--- a/internal/dto/responses/task.go
+++ b/internal/dto/responses/task.go
@@ -83,9 +83,10 @@ type TaskResponse struct {
 	Category        *TaskCategoryResponse    `json:"category,omitempty"`
 	PriorityID      *uint                    `json:"priority_id"`
 	Priority        *TaskPriorityResponse    `json:"priority,omitempty"`
-	FrequencyID     *uint                    `json:"frequency_id"`
-	Frequency       *TaskFrequencyResponse   `json:"frequency,omitempty"`
-	InProgress      bool                     `json:"in_progress"`
+	FrequencyID        *uint                    `json:"frequency_id"`
+	Frequency          *TaskFrequencyResponse   `json:"frequency,omitempty"`
+	CustomIntervalDays *int                     `json:"custom_interval_days"` // For "Custom" frequency, user-specified days
+	InProgress         bool                     `json:"in_progress"`
 	DueDate         *time.Time               `json:"due_date"`
 	NextDueDate     *time.Time               `json:"next_due_date"` // For recurring tasks, updated after each completion
 	EstimatedCost   *decimal.Decimal         `json:"estimated_cost"`
@@ -236,8 +237,9 @@ func newTaskResponseInternal(t *models.Task, daysThreshold int, now time.Time) T
 		Description:     t.Description,
 		CategoryID:      t.CategoryID,
 		PriorityID:      t.PriorityID,
-		FrequencyID:     t.FrequencyID,
-		InProgress:      t.InProgress,
+		FrequencyID:        t.FrequencyID,
+		CustomIntervalDays: t.CustomIntervalDays,
+		InProgress:         t.InProgress,
 		AssignedToID:    t.AssignedToID,
 		DueDate:         t.DueDate,
 		NextDueDate:     t.NextDueDate,