diff --git a/apps/repositories/migrations/0002_repository_default_branch_repository_dirty_at_and_more.py b/apps/repositories/migrations/0002_repository_default_branch_repository_dirty_at_and_more.py
new file mode 100644
index 0000000..8b1ada1
--- /dev/null
+++ b/apps/repositories/migrations/0002_repository_default_branch_repository_dirty_at_and_more.py
@@ -0,0 +1,28 @@
+# Generated by Django 4.2.27 on 2025-12-17 11:16
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("repositories", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="repository",
+            name="default_branch",
+            field=models.CharField(default="main", max_length=100),
+        ),
+        migrations.AddField(
+            model_name="repository",
+            name="dirty_at",
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name="repository",
+            name="last_synced_hash",
+            field=models.CharField(blank=True, max_length=40, null=True),
+        ),
+    ]
diff --git a/apps/repositories/serializers.py b/apps/repositories/serializers.py
index 8934f2a..9616616 100644
--- a/apps/repositories/serializers.py
+++ b/apps/repositories/serializers.py
@@ -6,10 +6,28 @@ class RepositorySerializer(serializers.ModelSerializer):
     """
     Serializer for the Repository model.
     Converts Repository instances to JSON, including all fields.
+    역참조 관계(contributors, commits)는 제외하여 순환 참조를 방지합니다.
     """
     class Meta:
         model = Repository
-        fields = '__all__'
+        fields = [
+            'id',
+            'github_id',
+            'name',
+            'full_name',
+            'description',
+            'html_url',
+            'stargazers_count',
+            'language',
+            'commit_count',
+            'created_at',
+            'updated_at',
+            'last_synced_at',
+            'owner',
+            'default_branch',
+            'last_synced_hash',
+            'dirty_at',
+        ]
 
 class ContributorSerializer(serializers.ModelSerializer):
     """
diff --git a/apps/repositories/views.py b/apps/repositories/views.py
index 34948d9..fce2f42 100644
--- a/apps/repositories/views.py
+++ b/apps/repositories/views.py
@@ -20,13 +20,23 @@ class RepositoryListView(APIView):
         responses={200: RepositorySerializer(many=True)},
     )
     def get(self, request):
-        user = request.user
+        try:
+            user = request.user
 
-        # user가 contributor 이고 commit_count > 0 인 repo만 조회
-        contributed_repos = Repository.objects.filter(
-            contributors__user=user,
-            contributors__commit_count__gt=0
-        ).distinct().order_by("-updated_at")
+            # user가 contributor 이고 commit_count > 0 인 repo만 조회
+            contributed_repos = Repository.objects.filter(
+                contributors__user=user,
+                contributors__commit_count__gt=0
+            ).distinct().order_by("-updated_at")
 
-        serializer = RepositorySerializer(contributed_repos, many=True)
-        return Response(serializer.data, status=200)
+            serializer = RepositorySerializer(contributed_repos, many=True)
+            return Response(serializer.data, status=200)
+        except Exception as e:
+            # 로깅은 Django의 기본 로깅 시스템을 사용
+            import logging
+            logger = logging.getLogger(__name__)
+            logger.error(f"Error fetching repositories for user {request.user.id}: {str(e)}", exc_info=True)
+            return Response(
+                {"detail": "레포지토리 목록을 불러오는 중 오류가 발생했습니다."},
+                status=500
+            )