diff --git a/FastGithub.DomainResolve/DomainResolveServiceCollectionExtensions.cs b/FastGithub.DomainResolve/DomainResolveServiceCollectionExtensions.cs
index 3e7c97f..06d5e83 100644
--- a/FastGithub.DomainResolve/DomainResolveServiceCollectionExtensions.cs
+++ b/FastGithub.DomainResolve/DomainResolveServiceCollectionExtensions.cs
@@ -18,7 +18,7 @@ namespace FastGithub
         {
             services.AddMemoryCache();
             services.TryAddSingleton<IDomainResolver, DomainResolver>();
-            services.AddSingleton<DnscryptProxyService>();
+            services.TryAddSingleton<DnscryptProxyService>();
             services.AddHostedService<DnscryptProxyHostedService>();
             return services;
         }
diff --git a/FastGithub.Upgrade/GithubRelease.cs b/FastGithub.Upgrade/GithubRelease.cs
index 6020c40..cf076a9 100644
--- a/FastGithub.Upgrade/GithubRelease.cs
+++ b/FastGithub.Upgrade/GithubRelease.cs
@@ -8,7 +8,7 @@ namespace FastGithub.Upgrade
     /// <summary>
     /// 发行记录
     /// </summary>
-    sealed class GithubRelease
+    public class GithubRelease
     {
         /// <summary>
         /// 标签名
diff --git a/FastGithub.Upgrade/UpgradeHostedService.cs b/FastGithub.Upgrade/UpgradeHostedService.cs
deleted file mode 100644
index 35fa681..0000000
--- a/FastGithub.Upgrade/UpgradeHostedService.cs
+++ /dev/null
@@ -1,46 +0,0 @@
-using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace FastGithub.Upgrade
-{
-    /// <summary>
-    /// 升级后台服务
-    /// </summary>
-    sealed class UpgradeHostedService : BackgroundService
-    {
-        private readonly UpgradeService upgradeService;
-        private readonly ILogger<UpgradeHostedService> logger;
-
-        /// <summary>
-        /// 升级后台服务
-        /// </summary>
-        /// <param name="logger"></param>
-        public UpgradeHostedService(
-            UpgradeService upgradeService,
-            ILogger<UpgradeHostedService> logger)
-        {
-            this.upgradeService = upgradeService;
-            this.logger = logger;
-        }
-
-        /// <summary>
-        /// 检测版本
-        /// </summary>
-        /// <param name="stoppingToken"></param>
-        /// <returns></returns>
-        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
-        {
-            try
-            {
-                await this.upgradeService.UpgradeAsync(stoppingToken);
-            }
-            catch (Exception ex)
-            {
-                this.logger.LogWarning($"升级失败：{ex.Message}");
-            }
-        }
-    }
-}
diff --git a/FastGithub.Upgrade/UpgradeService.cs b/FastGithub.Upgrade/UpgradeService.cs
index ed12903..4ddcf73 100644
--- a/FastGithub.Upgrade/UpgradeService.cs
+++ b/FastGithub.Upgrade/UpgradeService.cs
@@ -12,7 +12,7 @@ namespace FastGithub.Upgrade
     /// <summary>
     /// 升级服务
     /// </summary>
-    sealed class UpgradeService
+    public class UpgradeService
     {
         private readonly IDomainResolver domainResolver;
         private readonly ILogger<UpgradeService> logger;
@@ -58,7 +58,7 @@ namespace FastGithub.Upgrade
             }
             else
             {
-                this.logger.LogInformation($"当前版本{currentVersion}为最新版本");
+                this.logger.LogInformation($"当前版本{currentVersion}已经是最新版本");
             }
         }
 
diff --git a/FastGithub.Upgrade/UpgradeServiceCollectionExtensions.cs b/FastGithub.Upgrade/UpgradeServiceCollectionExtensions.cs
deleted file mode 100644
index 600fd9b..0000000
--- a/FastGithub.Upgrade/UpgradeServiceCollectionExtensions.cs
+++ /dev/null
@@ -1,24 +0,0 @@
-using FastGithub.Upgrade;
-using Microsoft.Extensions.DependencyInjection;
-
-namespace FastGithub
-{
-    /// <summary>
-    /// 服务注册扩展
-    /// </summary>
-    public static class DnsServiceCollectionExtensions
-    {
-        /// <summary>
-        /// 注册升级后台服务
-        /// </summary>
-        /// <param name="services"></param> 
-        /// <returns></returns>
-        public static IServiceCollection AddAppUpgrade(this IServiceCollection services)
-        {
-            return services
-                .AddHttpClient()
-                .AddSingleton<UpgradeService>()
-                .AddHostedService<UpgradeHostedService>();
-        }
-    }
-}
diff --git a/FastGithub/HostedService.cs b/FastGithub/HostedService.cs
index 8658c5a..738463c 100644
--- a/FastGithub/HostedService.cs
+++ b/FastGithub/HostedService.cs
@@ -1,5 +1,7 @@
-using Microsoft.Extensions.Hosting;
+using FastGithub.Upgrade;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -8,39 +10,43 @@ namespace FastGithub
     /// <summary>
     /// Host服务
     /// </summary>
-    sealed class HostedService : IHostedService
+    sealed class HostedService : BackgroundService
     {
+        private readonly UpgradeService upgradeService;
         private readonly ILogger<HostedService> logger;
 
         /// <summary>
         /// Host服务
         /// </summary>
+        /// <param name="upgradeService"></param>
         /// <param name="logger"></param>
-        public HostedService(ILogger<HostedService> logger)
+        public HostedService(
+            UpgradeService upgradeService,
+            ILogger<HostedService> logger)
         {
+            this.upgradeService = upgradeService;
             this.logger = logger;
         }
 
         /// <summary>
-        /// 启动服务
+        /// 后台任务
         /// </summary>
-        /// <param name="cancellationToken"></param>
+        /// <param name="stoppingToken"></param>
         /// <returns></returns>
-        public Task StartAsync(CancellationToken cancellationToken)
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
-            var localhost = "https://127.0.0.1";
-            this.logger.LogInformation($"{nameof(FastGithub)}启动完成，访问{localhost}或本机任意ip可查看使用说明");
-            return Task.CompletedTask;
-        }
-
-        /// <summary>
-        /// 停止服务
-        /// </summary>
-        /// <param name="cancellationToken"></param>
-        /// <returns></returns>
-        public Task StopAsync(CancellationToken cancellationToken)
-        {
-            return Task.CompletedTask;
+            try
+            {
+                await this.upgradeService.UpgradeAsync(stoppingToken);
+            }
+            catch (Exception ex)
+            {
+                this.logger.LogWarning($"升级检测失败：{ex.Message}");
+            }
+            finally
+            {
+                this.logger.LogInformation($"{nameof(FastGithub)}启动完成，访问https://127.0.0.1或本机其它任意ip可进入Dashboard");
+            }
         }
     }
 }
diff --git a/FastGithub/Startup.cs b/FastGithub/Startup.cs
index f35c446..7ef5a5e 100644
--- a/FastGithub/Startup.cs
+++ b/FastGithub/Startup.cs
@@ -1,3 +1,4 @@
+using FastGithub.Upgrade;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -30,9 +31,11 @@ namespace FastGithub
             services.AddDomainResolve();
             services.AddHttpClient();
             services.AddReverseProxy();
-            services.AddAppUpgrade();
+
             services.AddSingleton<FastGithubConfig>();
             services.Configure<FastGithubOptions>(this.Configuration.GetSection(nameof(FastGithub)));
+
+            services.AddSingleton<UpgradeService>();
             services.AddHostedService<HostedService>();
 
             services.AddControllersWithViews();
diff --git a/FastGithub/Views/Home/Index.cshtml b/FastGithub/Views/Home/Index.cshtml
index cfd0e06..4583d6f 100644
--- a/FastGithub/Views/Home/Index.cshtml
+++ b/FastGithub/Views/Home/Index.cshtml
@@ -34,7 +34,7 @@
             <span>v@(ProductionVersion.GetAppVersion())</span>
         </p>
         <p>
-            <span>平台地址：</span>
+            <span>项目地址：</span>
             <a target="_blank" href="https://github.com/xljiulang/FastGithub">https://github.com/xljiulang/FastGithub</a>
         </p>
 
@@ -42,7 +42,7 @@
 
         <h3>CA证书</h3>
         <p>
-            你可能需要<a target="_blank" href="/cert">下载FastGithub自颁发的CA证书</a>，根据设备所使用的平台要求，导入到受信任的根证书颁发机构或浏览器
+            你可能需要下载<a target="_blank" href="/cert">FastGithub自颁发的CA证书</a>，根据设备所使用的平台要求，导入到受信任的根证书颁发机构或浏览器
         </p>
 
         <h3>部署方式</h3>