diff --git a/src/modules/Elsa.Workflows.Core/Serialization/Converters/TypeJsonConverter.cs b/src/modules/Elsa.Workflows.Core/Serialization/Converters/TypeJsonConverter.cs
index 24ff2dfcf..816b5fb5b 100644
--- a/src/modules/Elsa.Workflows.Core/Serialization/Converters/TypeJsonConverter.cs
+++ b/src/modules/Elsa.Workflows.Core/Serialization/Converters/TypeJsonConverter.cs
@@ -31,13 +31,21 @@ public class TypeJsonConverter : JsonConverter<Type>
     {
         var typeAlias = reader.GetString()!;
 
-        // Handle collection types.
+        // Handle array types.
         if (typeAlias.EndsWith("[]"))
         {
-            var elementTypeAlias = typeAlias[..^"[]".Length];
+            var elementTypeAlias = typeAlias[..^2];
             var elementType = _wellKnownTypeRegistry.TryGetType(elementTypeAlias, out var t) ? t : Type.GetType(elementTypeAlias)!;
             return elementType.MakeArrayType();
         }
+        
+        // Handle collection types.
+        if (typeAlias.EndsWith("()"))
+        {
+            var elementTypeAlias = typeAlias[..^"()".Length];
+            var elementType = _wellKnownTypeRegistry.TryGetType(elementTypeAlias, out var t) ? t : Type.GetType(elementTypeAlias)!;
+            return typeof(List<>).MakeGenericType(elementType);
+        }
 
         return _wellKnownTypeRegistry.TryGetType(typeAlias, out var type) ? type : Type.GetType(typeAlias);
     }
@@ -45,6 +53,15 @@ public class TypeJsonConverter : JsonConverter<Type>
     /// <inheritdoc />
     public override void Write(Utf8JsonWriter writer, Type value, JsonSerializerOptions options)
     {
+        // Handle array types.
+        if (value.IsArray)
+        {
+            var elementType = value.GetElementType()!;
+            var elementTypeAlias = _wellKnownTypeRegistry.TryGetAlias(elementType, out var elementTypeAliasValue) ? elementTypeAliasValue : elementType.GetSimpleAssemblyQualifiedName();
+            writer.WriteStringValue($"{elementTypeAlias}[]");
+            return;
+        }
+        
         // Handle collection types.
         if (value is { IsGenericType: true, GenericTypeArguments.Length: 1 })
         {
@@ -53,7 +70,7 @@ public class TypeJsonConverter : JsonConverter<Type>
 
             if (typedEnumerable.IsAssignableFrom(value) && _wellKnownTypeRegistry.TryGetAlias(elementType, out var elementTypeAlias))
             {
-                writer.WriteStringValue($"{elementTypeAlias}[]");
+                writer.WriteStringValue($"{elementTypeAlias}()");
                 return;
             }
         }
diff --git a/test/integration/Elsa.Workflows.IntegrationTests/Serialization/JsonSerialization/Tests.cs b/test/integration/Elsa.Workflows.IntegrationTests/Serialization/JsonSerialization/Tests.cs
index 1a6ff38d5..f4a853f28 100644
--- a/test/integration/Elsa.Workflows.IntegrationTests/Serialization/JsonSerialization/Tests.cs
+++ b/test/integration/Elsa.Workflows.IntegrationTests/Serialization/JsonSerialization/Tests.cs
@@ -74,7 +74,8 @@ public class SerializationTests(ITestOutputHelper testOutputHelper)
     {
         var dict = new Dictionary<string, object>
         {
-            { "Content", new List<TestObject>()
+            {
+                "Content", new List<TestObject>()
                 {
                     new()
                     {
@@ -94,9 +95,10 @@ public class SerializationTests(ITestOutputHelper testOutputHelper)
     {
         var dict = new Dictionary<string, object>
         {
-            { "Content", new List<Guid>
+            {
+                "Content", new List<Guid>
                 {
-                   Guid.NewGuid()
+                    Guid.NewGuid()
                 }
             }
         };
@@ -106,6 +108,24 @@ public class SerializationTests(ITestOutputHelper testOutputHelper)
         Assert.Equal(typeof(List<Guid>), result.GetType());
     }
 
+    [Fact]
+    public void RoundtripPrimitiveArrays()
+    {
+        var dict = new Dictionary<string, object>
+        {
+            {
+                "Content", new[]
+                {
+                    Guid.NewGuid()
+                }
+            }
+        };
+        var jsonSerialized = SerializeUsingPayloadSerializer(dict);
+        var transformationModel = DeSerializeDictionaryUsingPayloadSerializer(jsonSerialized);
+        var result = transformationModel["Content"];
+        Assert.Equal(typeof(Guid[]), result.GetType());
+    }
+
     private string SerializeUsingPayloadSerializer(object obj)
     {
         var payloadSerializer = _services.GetRequiredService<IPayloadSerializer>();
@@ -134,10 +154,11 @@ public class SerializationTests(ITestOutputHelper testOutputHelper)
 
         var dict = new Dictionary<string, object>
         {
-            { "StatusCode", "Created" },
-            { "Content",isArray ?
-            (type == typeof(JArray)? JArray.Parse(jsonContent):JsonArray.Parse(jsonContent)):
-            (type == typeof(JObject)? JObject.Parse(jsonContent):JsonObject.Parse(jsonContent))
+            {
+                "StatusCode", "Created"
+            },
+            {
+                "Content", isArray ? (type == typeof(JArray) ? JArray.Parse(jsonContent) : JsonArray.Parse(jsonContent)) : (type == typeof(JObject) ? JObject.Parse(jsonContent) : JsonObject.Parse(jsonContent))
             }
         };
         return dict;