diff --git a/src/scripting/Elsa.Scripting.JavaScript/Handlers/ConfigureJavaScriptEngine.cs b/src/scripting/Elsa.Scripting.JavaScript/Handlers/ConfigureJavaScriptEngine.cs
index dbef88fe70..53b89acc97 100644
--- a/src/scripting/Elsa.Scripting.JavaScript/Handlers/ConfigureJavaScriptEngine.cs
+++ b/src/scripting/Elsa.Scripting.JavaScript/Handlers/ConfigureJavaScriptEngine.cs
@@ -3,6 +3,7 @@
 using System.Dynamic;
 using System.Globalization;
 using System.Linq;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using Elsa.Models;
@@ -94,6 +95,7 @@ public async Task Handle(EvaluatingJavaScriptExpression notification, Cancellati
             engine.RegisterType<Guid>();
             engine.RegisterType<WorkflowExecutionContext>();
             engine.RegisterType<ActivityExecutionContext>();
+            engine.RegisterType<Encoding>();
 
             // Workflow variables.
             var variables = workflowExecutionContext.GetMergedVariables();
diff --git a/src/scripting/Elsa.Scripting.JavaScript/Typings/CommonTypeDefinitionProvider.cs b/src/scripting/Elsa.Scripting.JavaScript/Typings/CommonTypeDefinitionProvider.cs
index 9475b70e78..0f895bbbcb 100644
--- a/src/scripting/Elsa.Scripting.JavaScript/Typings/CommonTypeDefinitionProvider.cs
+++ b/src/scripting/Elsa.Scripting.JavaScript/Typings/CommonTypeDefinitionProvider.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.Text;
 using Elsa.Models;
 using Elsa.Scripting.JavaScript.Services;
 using Elsa.Services.Models;
@@ -49,6 +50,7 @@ public override IEnumerable<Type> CollectTypes(TypeDefinitionContext context) =>
             typeof(ActivityExecutionContext),
             typeof(WorkflowExecutionContext),
             typeof(WorkflowInstance),
+            typeof(Encoding)
         };
     }
 }
\ No newline at end of file