diff --git a/internal/workflow/workflow_test.go b/internal/workflow/workflow_test.go
index a05a200..81ae603 100644
--- a/internal/workflow/workflow_test.go
+++ b/internal/workflow/workflow_test.go
@@ -9,6 +9,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"sort"
 	"strings"
 	"testing"
 	"time"
@@ -43,6 +44,8 @@ func (f *fakeSource) OpenIssues(owner, repo string) ([]Issue, error) {
 	for _, i := range f.issues[owner+"/"+repo] {
 		out = append(out, i)
 	}
+	// 對齊真實 API：issues 依 id（=number）遞增回傳，消除 map 迭代隨機性。
+	sort.Slice(out, func(a, b int) bool { return out[a].Number < out[b].Number })
 	return out, nil
 }