diff --git a/internal/storage/tasks.go b/internal/storage/tasks.go
index 6ead6df..8043e3c 100644
--- a/internal/storage/tasks.go
+++ b/internal/storage/tasks.go
@@ -6,6 +6,7 @@ import (
 	"database/sql"
 	"encoding/hex"
 	"fmt"
+	"log"
 	"time"
 )
 
@@ -85,6 +86,7 @@ func (s *Storage) UpdateTask(ctx context.Context, t *Task) error {
 		if !IsValidTransition(oldStatus, t.Status) {
 			return fmt.Errorf("%w: %s → %s for task %d", ErrInvalidStatus, oldStatus, t.Status, t.ID)
 		}
+		log.Printf("task %d: status %q → %q", t.ID, oldStatus, t.Status)
 	} else if t.Status == "" {
 		t.Status = oldStatus
 	}