diff --git a/src/modules/Elsa.Workflows.Core/Serialization/Converters/PolymorphicObjectConverterFactory.cs b/src/modules/Elsa.Workflows.Core/Serialization/Converters/PolymorphicObjectConverterFactory.cs
index 448fc16be..fc94427d4 100644
--- a/src/modules/Elsa.Workflows.Core/Serialization/Converters/PolymorphicObjectConverterFactory.cs
+++ b/src/modules/Elsa.Workflows.Core/Serialization/Converters/PolymorphicObjectConverterFactory.cs
@@ -2,7 +2,6 @@ using System.Dynamic;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using Elsa.Expressions.Contracts;
-using Elsa.Expressions.Services;
 
 namespace Elsa.Workflows.Serialization.Converters;