diff --git a/backend/cmd/server/main.go b/backend/cmd/server/main.go
index 909abe8b..00e41c9e 100644
--- a/backend/cmd/server/main.go
+++ b/backend/cmd/server/main.go
@@ -55,7 +55,7 @@ func main() {
 		"db_port", getEnv("DB_PORT", "5532"),
 		"backend_port", getEnv("BACKEND_PORT", "3000"),
 		"frontend_port", getEnv("FRONTEND_PORT", "5000"),
-		"frontend_url", getEnv("FRONTEND_URL", "http://ssologin.hmac.kr"),
+		"frontend_url", getEnv("FRONTEND_URL", "http://sso.hmac.kr"),
 		"redis_addr", getEnv("REDIS_ADDR", "redis:6379"),
 	)
 
diff --git a/backend/internal/handler/auth_handler.go b/backend/internal/handler/auth_handler.go
index cdf5ba97..3942cb16 100644
--- a/backend/internal/handler/auth_handler.go
+++ b/backend/internal/handler/auth_handler.go
@@ -143,7 +143,7 @@ func (h *AuthHandler) InitEnchantedLink(c *fiber.Ctx) error {
 	// Generate Link
 	frontendURL := os.Getenv("FRONTEND_URL")
 	if frontendURL == "" {
-		frontendURL = "http://ssologin.hmac.kr"
+		frontendURL = "http://sso.hmac.kr"
 	}
 	link := fmt.Sprintf("%s/verify/%s", frontendURL, token)
 
@@ -343,7 +343,7 @@ func (h *AuthHandler) InitQRLogin(c *fiber.Ctx) error {
 	// QR 코드 페이로드를 실제 접속 가능한 URL로 변경합니다.
 	frontendURL := os.Getenv("FRONTEND_URL")
 	if frontendURL == "" {
-		frontendURL = "https://ssologin.hmac.kr"
+		frontendURL = "https://sso.hmac.kr"
 	}
 	qrPayload := fmt.Sprintf("%s/approve?ref=%s", frontendURL, pendingRef)
 
diff --git a/docker/docker-compose.template.yaml b/docker/docker-compose.template.yaml
index 4a529658..84a1c596 100644
--- a/docker/docker-compose.template.yaml
+++ b/docker/docker-compose.template.yaml
@@ -16,6 +16,7 @@ services:
       - CLICKHOUSE_PORT=${CLICKHOUSE_PORT_NATIVE:-9000}
       - CLICKHOUSE_USER=${CLICKHOUSE_USER:-baron}
       - CLICKHOUSE_PASSWORD=${CLICKHOUSE_PASSWORD:-password}
+      - FRONTEND_URL=${FRONTEND_URL:-https://sso.hmac.kr}
     ports:
       - "${BACKEND_PORT:-3010}:3010"
     depends_on:
@@ -33,6 +34,9 @@ services:
     image: ${FRONTEND_IMAGE_NAME}:${IMAGE_TAG}
     container_name: baron_frontend
     restart: unless-stopped
+    environment:
+      - FRONTEND_URL=${FRONTEND_URL:-https://sso.hmac.kr}
+      - BACKEND_URL=${FRONTEND_URL:-https://sso.hmac.kr}
     ports:
       - "${FRONTEND_PORT:-80}:80"
     depends_on:
diff --git a/frontend/lib/core/services/audit_service.dart b/frontend/lib/core/services/audit_service.dart
index 02bb81a4..35480d79 100644
--- a/frontend/lib/core/services/audit_service.dart
+++ b/frontend/lib/core/services/audit_service.dart
@@ -3,7 +3,7 @@ import 'package:http/http.dart' as http;
 import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 class AuditService {
-  static String get _baseUrl => dotenv.env['BACKEND_URL'] ?? 'https://ssologin.hmac.kr';
+  static String get _baseUrl => dotenv.env['BACKEND_URL'] ?? 'https://sso.hmac.kr';
 
   static Future<void> logEvent({
     required String userId,
diff --git a/frontend/lib/core/services/auth_proxy_service.dart b/frontend/lib/core/services/auth_proxy_service.dart
index 85361e62..9f694b23 100644
--- a/frontend/lib/core/services/auth_proxy_service.dart
+++ b/frontend/lib/core/services/auth_proxy_service.dart
@@ -3,11 +3,11 @@ import 'package:http/http.dart' as http;
 import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 class AuthProxyService {
-  static String get _baseUrl => dotenv.env['BACKEND_URL'] ?? 'https://ssologin.hmac.kr';
+  static String get _baseUrl => dotenv.env['BACKEND_URL'] ?? 'https://sso.hmac.kr';
 
   static Future<Map<String, dynamic>> initEnchantedLink(String loginId, {String? method}) async {
     final url = Uri.parse('$_baseUrl/api/v1/auth/enchanted-link/init');
-    final frontendUrl = dotenv.env['FRONTEND_URL'] ?? 'http://ssologin.hmac.kr';
+    final frontendUrl = dotenv.env['FRONTEND_URL'] ?? 'http://sso.hmac.kr';
     
     final body = {
       'loginId': loginId,