diff --git a/users/services.py b/users/services.py
index 74182e3..ea673f4 100644
--- a/users/services.py
+++ b/users/services.py
@@ -10,7 +10,8 @@ thirty_days_ago = timezone.now() - timedelta(days=30)
 
 DUPLICATE_CHECK = {
     'email': 'email',
-    'nickname': 'nickname'
+    'nickname': 'nickname',
+    'phone': 'phone'
 }
 
 class CheckUserFieldDuplicateService: