diff --git a/internal/types/app/default.go b/internal/types/app/default.go
index eedaaa0c3..833714b71 100644
--- a/internal/types/app/default.go
+++ b/internal/types/app/default.go
@@ -1,11 +1,18 @@
 package app
 
 import (
+	"os"
+
 	"github.com/langgenius/dify-cloud-kit/oss"
 	"golang.org/x/exp/constraints"
 )
 
 func (config *Config) SetDefault() {
+	// Fallback to lowercase proxy env vars if uppercase are not set
+	setDefaultString(&config.HttpProxy, os.Getenv("http_proxy"))
+	setDefaultString(&config.HttpsProxy, os.Getenv("https_proxy"))
+	setDefaultString(&config.NoProxy, os.Getenv("no_proxy"))
+
 	switch config.DBType {
 	case DB_TYPE_OCEANBASE, DB_TYPE_SEEKDB:
 		config.DBType = DB_TYPE_MYSQL