diff --git a/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs b/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
index ac1259ef29..e58095536a 100644
--- a/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
+++ b/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
@@ -1,9 +1,9 @@
using System;
using System.Collections.Generic;
+using System.Text.Json.Serialization;
using MediaBrowser.Common.Json.Converters;
using MediaBrowser.Model.Dlna;
using MediaBrowser.Model.Session;
-using Newtonsoft.Json;
namespace Jellyfin.Api.Models.SessionDtos
{
@@ -15,6 +15,7 @@ namespace Jellyfin.Api.Models.SessionDtos
///
/// Gets or sets the list of playable media types.
///
+ [JsonConverter(typeof(JsonCommaDelimitedArrayConverterFactory))]
public IReadOnlyList PlayableMediaTypes { get; set; } = Array.Empty();
///