diff --git a/Dockerfile b/Dockerfile
index ee1d227..cb74ee3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,4 @@ FROM base AS final
 WORKDIR /app
 COPY --from=publish /app/publish .
 
-RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
-RUN echo 'Asia/Shanghai' >/etc/timezone
-
 ENTRYPOINT ["dotnet", "2021-backend.dll"]
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
index 0cb0683..584e6c1 100644
--- a/Program.cs
+++ b/Program.cs
@@ -17,6 +17,7 @@ namespace _2021_backend
 
         public static void Main(string[] args)
         {
+            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
 
             var host = CreateHostBuilder(args).Build();
             using (var scope = host.Services.CreateScope())