diff --git a/src/Ui.Altair/Internal/AltairPageModel.cs b/src/Ui.Altair/Internal/AltairPageModel.cs
index 139f6665..2fa9f3bc 100644
--- a/src/Ui.Altair/Internal/AltairPageModel.cs
+++ b/src/Ui.Altair/Internal/AltairPageModel.cs
@@ -80,6 +80,7 @@ private static string JsonSerialize(Dictionary<string, object> value)
 [JsonSerializable(typeof(bool))]
 [JsonSerializable(typeof(int))]
 [JsonSerializable(typeof(string))]
+[JsonSerializable(typeof(string[]))]
 internal partial class SourceGenerationContext : JsonSerializerContext
 {
 }