diff --git a/src/main/java/codes/yam/contacts/ContactService.java b/src/main/java/codes/yam/contacts/ContactService.java
index 6809674..71c1a9f 100644
--- a/src/main/java/codes/yam/contacts/ContactService.java
+++ b/src/main/java/codes/yam/contacts/ContactService.java
@@ -33,7 +33,7 @@ public void delete(String slug) {
 
   public void deleteMany(List<String> slugs) {
     var contacts = contactRepository.findAllBySlugIn(slugs);
-    contactRepository.deleteAll(contacts);
+    contactRepository.deleteAllInBatch(contacts);
   }
 
   public Contact update(String slug, Contact updated) {