diff --git a/nginx/conf.d/prod.conf b/nginx/conf.d/prod.conf
index dd209643..6630299d 100644
--- a/nginx/conf.d/prod.conf
+++ b/nginx/conf.d/prod.conf
@@ -1,6 +1,6 @@
 server {
     listen 80;
-    server_name cockple.store;
+    server_name api.cockple.store;
 
     location /ws/ {
         proxy_pass http://cockple-app:8080;
diff --git a/src/main/java/umc/cockple/demo/global/config/SecurityConfig.java b/src/main/java/umc/cockple/demo/global/config/SecurityConfig.java
index 433fd7b4..d6b0a657 100644
--- a/src/main/java/umc/cockple/demo/global/config/SecurityConfig.java
+++ b/src/main/java/umc/cockple/demo/global/config/SecurityConfig.java
@@ -66,7 +66,7 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
     @Bean
     public CorsConfigurationSource corsConfigurationSource() {
         CorsConfiguration config = new CorsConfiguration();
-        config.setAllowedOrigins(List.of("http://localhost:5173", "https://cockple.store", "https://staging.cockple.store", "https://cockple-fe.vercel.app")); // 배포 시에는 도메인 지정 권장
+        config.setAllowedOrigins(List.of("http://localhost:5173", "https://cockple.store", "https://www.cockple.store", "https://staging.cockple.store", "https://cockple-fe.vercel.app")); // 배포 시에는 도메인 지정 권장
         config.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"));
         config.setAllowedHeaders(List.of("*"));
         config.setAllowCredentials(true);
diff --git a/src/main/java/umc/cockple/demo/global/config/WebSocketConfig.java b/src/main/java/umc/cockple/demo/global/config/WebSocketConfig.java
index aea6747b..94e99a84 100644
--- a/src/main/java/umc/cockple/demo/global/config/WebSocketConfig.java
+++ b/src/main/java/umc/cockple/demo/global/config/WebSocketConfig.java
@@ -21,7 +21,7 @@ public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
         registry
                 .addHandler(chatWebSocketHandler, "/ws/chats")
                 .addInterceptors(jwtWebSocketAuthInterceptor)
-                .setAllowedOrigins("http://localhost:5173", "https://cockple.store", "https://cockple-fe.vercel.app/", "https://staging.cockple.store")
+                .setAllowedOrigins("http://localhost:5173", "https://cockple.store", "https://www.cockple.store", "https://cockple-fe.vercel.app/", "https://staging.cockple.store")
                 .withSockJS(); // 브라우저 호환성
     }
 }