diff --git a/AsbCloudWebApi/Startup.cs b/AsbCloudWebApi/Startup.cs
index dd309051..9e37481e 100644
--- a/AsbCloudWebApi/Startup.cs
+++ b/AsbCloudWebApi/Startup.cs
@@ -10,6 +10,11 @@ namespace AsbCloudWebApi
 {
     public class Startup
     {
+        private static readonly System.Text.Json.JsonSerializerOptions jsonSerializerOptions = new System.Text.Json.JsonSerializerOptions
+        {
+            NumberHandling = System.Text.Json.Serialization.JsonNumberHandling.AllowNamedFloatingPointLiterals,
+        };
+
         public Startup(IConfiguration configuration)
         {
             Configuration = configuration;
@@ -19,7 +24,12 @@ namespace AsbCloudWebApi
 
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddControllers();
+            services.AddControllers()
+                .AddJsonOptions(new System.Action<Microsoft.AspNetCore.Mvc.JsonOptions>(opts => 
+                {
+                    opts.JsonSerializerOptions.NumberHandling = System.Text.Json.Serialization.JsonNumberHandling.AllowNamedFloatingPointLiterals;
+                    }
+                ));
 
             services.AddSwagger();