diff --git a/src/main/java/com/knu/algo_hive/auth/config/SecurityConfig.java b/src/main/java/com/knu/algo_hive/auth/config/SecurityConfig.java
index 7152997..43d18bb 100644
--- a/src/main/java/com/knu/algo_hive/auth/config/SecurityConfig.java
+++ b/src/main/java/com/knu/algo_hive/auth/config/SecurityConfig.java
@@ -82,7 +82,6 @@ public CookieSerializer cookieSerializer() {
         DefaultCookieSerializer serializer = new DefaultCookieSerializer();
         serializer.setSameSite("None");
         serializer.setUseSecureCookie(true);
-        serializer.setDomainName("algo.knu-soft.site");
         return serializer;
     }
 }