diff --git a/src/main/java/com/soongsil/CoffeeChat/config/oauth2/CustomSuccessHandler.java b/src/main/java/com/soongsil/CoffeeChat/config/oauth2/CustomSuccessHandler.java
index e8077d8..3162404 100644
--- a/src/main/java/com/soongsil/CoffeeChat/config/oauth2/CustomSuccessHandler.java
+++ b/src/main/java/com/soongsil/CoffeeChat/config/oauth2/CustomSuccessHandler.java
@@ -158,7 +158,7 @@ private void addSameSiteCookie(HttpServletResponse response, String name, String
                 .httpOnly(true)
                 .secure(true)
                 .maxAge(24 * 60 * 60)
-                .domain("coffeego-ssu.web.app") // 정확한 도메인 설정
+                .domain(".coffeego-ssu.web.app")
                 .path("/")
                 .sameSite("None")
                 .build();