diff --git a/backend/internal/model/usecase/model.go b/backend/internal/model/usecase/model.go
index d6a852b4..f046ea92 100644
--- a/backend/internal/model/usecase/model.go
+++ b/backend/internal/model/usecase/model.go
@@ -36,6 +36,7 @@ func NewModelUsecase(
 			MaxIdleConnsPerHost: 100,
 			MaxConnsPerHost:     100,
 			IdleConnTimeout:     time.Second * 30,
+			Proxy:               http.ProxyFromEnvironment,
 		},
 	}
 	return &ModelUsecase{repo: repo, cfg: cfg, logger: logger, client: client}
diff --git a/backend/internal/proxy/proxy.go b/backend/internal/proxy/proxy.go
index 8b3d923c..612c2dc7 100644
--- a/backend/internal/proxy/proxy.go
+++ b/backend/internal/proxy/proxy.go
@@ -58,6 +58,7 @@ func NewLLMProxy(
 		MaxConnsPerHost:     cfg.LLMProxy.ClientPoolSize,
 		MaxIdleConnsPerHost: cfg.LLMProxy.ClientPoolSize,
 		IdleConnTimeout:     24 * time.Hour,
+		Proxy:               http.ProxyFromEnvironment,
 		DialContext: (&net.Dialer{
 			Timeout:   30 * time.Second,
 			KeepAlive: 24 * time.Hour,