diff --git a/agent/app/service/app_upgrade.go b/agent/app/service/app_upgrade.go
index 0a9caa3a965f..08e9a0aaced1 100644
--- a/agent/app/service/app_upgrade.go
+++ b/agent/app/service/app_upgrade.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"maps"
 	"os"
 	"path"
 	"sort"
@@ -26,7 +27,7 @@ import (
 	"github.com/1Panel-dev/1Panel/agent/utils/files"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/filters"
-	"github.com/subosito/gotenv"
+	"github.com/joho/godotenv"
 )
 
 type appUpgradePhase int
@@ -255,7 +256,7 @@ func (u *appUpgradeContext) prepare(t *task.Task) error {
 		return buserr.WithName("ErrFileNotFound", "docker-compose.yml")
 	}
 
-	u.envContent, err = renderUpgradeEnv(u.candidate, u.oldEnvContent)
+	u.envContent, err = renderUpgradeEnv(&u.candidate, u.oldEnvContent)
 	if err != nil {
 		return err
 	}
@@ -699,20 +700,47 @@ func verifyUpgradeImages(images []string) error {
 	return nil
 }
 
-func renderUpgradeEnv(install model.AppInstall, original []byte) ([]byte, error) {
+func renderUpgradeEnv(install *model.AppInstall, original []byte) ([]byte, error) {
+	originalEnv := make(map[string]string)
+	if len(original) > 0 {
+		var err error
+		originalEnv, err = godotenv.UnmarshalBytes(original)
+		if err != nil {
+			return nil, err
+		}
+	}
+	params := make(map[string]string, len(originalEnv))
+	maps.Copy(params, originalEnv)
 	envs := make(map[string]interface{})
 	if err := json.Unmarshal([]byte(install.Env), &envs); err != nil {
 		return nil, err
 	}
-	params := make(map[string]string, len(envs))
 	handleMap(envs, params)
 	if install.App.Key == constant.AppOpenresty {
-		originalEnv, _ := gotenv.Unmarshal(string(original))
 		for _, key := range []string{"CONTAINER_PACKAGE_URL", "RESTY_ADD_PACKAGE_BUILDDEPS", "RESTY_CONFIG_OPTIONS_MORE"} {
-			params[key] = originalEnv[key]
+			if value, ok := originalEnv[key]; ok {
+				params[key] = value
+			}
+		}
+		if websiteDir := strings.TrimSpace(originalEnv["WEBSITE_DIR"]); websiteDir != "" {
+			params["WEBSITE_DIR"] = websiteDir
+		}
+		websiteDir := strings.TrimSpace(params["WEBSITE_DIR"])
+		if websiteDir == "" {
+			websiteDir = NewISettingService().GetWebsiteDir()
+		}
+		if !path.IsAbs(websiteDir) {
+			websiteDir = path.Join(global.Dir.DataDir, websiteDir)
+		}
+		params["WEBSITE_DIR"] = websiteDir
+		envs["WEBSITE_DIR"] = websiteDir
+		content, marshalErr := json.Marshal(envs)
+		if marshalErr != nil {
+			return nil, marshalErr
 		}
+		install.Env = string(content)
 	}
-	content, err := gotenv.Marshal(params)
+	content, err := godotenv.Marshal(params)
 	if err != nil {
 		return nil, err
 	}
@@ -847,7 +875,7 @@ func waitAppContainersReady(ctx context.Context, install model.AppInstall) ([]st
 func waitAppContainersReadyWithClient(ctx context.Context, client appContainerReadinessClient, install model.AppInstall) ([]string, error) {
 	envContent, err := os.ReadFile(install.GetEnvPath())
 	if err != nil {
-		envContent, err = renderUpgradeEnv(install, nil)
+		envContent, err = renderUpgradeEnv(&install, nil)
 		if err != nil {
 			return nil, err
 		}