diff --git a/src/Codebelt.Extensions.Carter/Response/ConfigurableResponseNegotiator.cs b/src/Codebelt.Extensions.Carter/Response/ConfigurableResponseNegotiator.cs
index eecd1c6..433ced8 100644
--- a/src/Codebelt.Extensions.Carter/Response/ConfigurableResponseNegotiator.cs
+++ b/src/Codebelt.Extensions.Carter/Response/ConfigurableResponseNegotiator.cs
@@ -113,7 +113,7 @@ public virtual async Task Handle<T>(HttpRequest req, HttpResponse res, T model,
     {
         var encoding = GetEncoding(req);
         res.ContentType = ContentType + "; charset=" + encoding.WebName;
-        await using var textWriter = new StreamWriter(res.Body, encoding);
+        await using var textWriter = new StreamWriter(res.Body, encoding, bufferSize: -1, leaveOpen: true);
         var formatter = GetFormatter();
         using (var streamReader = new StreamReader(formatter.Serialize(model), encoding))
         {