diff --git a/app/ldiff/diff_test.go b/app/ldiff/diff_test.go
index f6b1ee8b..97780de9 100644
--- a/app/ldiff/diff_test.go
+++ b/app/ldiff/diff_test.go
@@ -10,6 +10,7 @@ import (
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"golang.org/x/exp/slices"
 )
 
 func TestDiff_fillRange(t *testing.T) {