diff --git a/src/Elastic.Clients.Elasticsearch/Core/Infer/Field/Field.cs b/src/Elastic.Clients.Elasticsearch/Core/Infer/Field/Field.cs
index 86e622fde8a..dbbf247862a 100644
--- a/src/Elastic.Clients.Elasticsearch/Core/Infer/Field/Field.cs
+++ b/src/Elastic.Clients.Elasticsearch/Core/Infer/Field/Field.cs
@@ -73,7 +73,6 @@ public Field(PropertyInfo property, double? boost = null, string format = null)
 	/// </remarks>
 	public string? Format { get; set; }
 
-	[JsonIgnore]
 	internal bool CachableExpression { get; }
 
 	/// <summary>