diff --git a/src/generators/csharp/presets/NewtonsoftSerializerPreset.ts b/src/generators/csharp/presets/NewtonsoftSerializerPreset.ts
index 648e948f4c..8c803ae484 100644
--- a/src/generators/csharp/presets/NewtonsoftSerializerPreset.ts
+++ b/src/generators/csharp/presets/NewtonsoftSerializerPreset.ts
@@ -29,8 +29,7 @@ function renderSerialize({ model }: { model: ConstrainedObjectModel }): string {
 var stringEnumValue = enumValue.ToString();
 // C# converts booleans to uppercase True and False, which newtonsoft cannot understand
 var jsonStringCompliant = stringEnumValue == "True" || stringEnumValue == "False" ? stringEnumValue.ToLower() : stringEnumValue;
-var jsonToken = JToken.Parse(jsonStringCompliant);
-jo.Add("${prop.unconstrainedPropertyName}", jsonToken);`;
+jo.Add("${prop.unconstrainedPropertyName}", JToken.FromObject(jsonStringCompliant, serializer));`;
       }
       return `if (value.${propertyAccessor} != null)
 {
@@ -93,7 +92,7 @@ function renderDeserialize({
       prop.property instanceof ConstrainedReferenceModel &&
       prop.property.ref instanceof ConstrainedEnumModel
     ) {
-      toValue = `${prop.property.name}Extensions.To${prop.property.name}(jo["${prop.unconstrainedPropertyName}"])`;
+      toValue = `${prop.property.name}Extensions.To${prop.property.name}(jo["${prop.unconstrainedPropertyName}"].ToString())`;
     }
     return `if(jo["${prop.unconstrainedPropertyName}"] != null) {
   value.${propertyAccessor} = ${toValue};
diff --git a/test/generators/csharp/presets/__snapshots__/NewtonsoftSerializerPreset.spec.ts.snap b/test/generators/csharp/presets/__snapshots__/NewtonsoftSerializerPreset.spec.ts.snap
index 3ea6419f36..698c143006 100644
--- a/test/generators/csharp/presets/__snapshots__/NewtonsoftSerializerPreset.spec.ts.snap
+++ b/test/generators/csharp/presets/__snapshots__/NewtonsoftSerializerPreset.spec.ts.snap
@@ -55,7 +55,7 @@ if(jo[\\"numberProp\\"] != null) {
   value.NumberProp = jo[\\"numberProp\\"].ToObject<double?>(serializer);
 }
 if(jo[\\"enumProp\\"] != null) {
-  value.EnumProp = EnumTestExtensions.ToEnumTest(jo[\\"enumProp\\"]);
+  value.EnumProp = EnumTestExtensions.ToEnumTest(jo[\\"enumProp\\"].ToString());
 }
 if(jo[\\"objectProp\\"] != null) {
   value.ObjectProp = jo[\\"objectProp\\"].ToObject<NestedTest?>(serializer);
@@ -88,8 +88,7 @@ if (value.EnumProp != null)
 var stringEnumValue = enumValue.ToString();
 // C# converts booleans to uppercase True and False, which newtonsoft cannot understand
 var jsonStringCompliant = stringEnumValue == \\"True\\" || stringEnumValue == \\"False\\" ? stringEnumValue.ToLower() : stringEnumValue;
-var jsonToken = JToken.Parse(jsonStringCompliant);
-jo.Add(\\"enumProp\\", jsonToken);
+jo.Add(\\"enumProp\\", JToken.FromObject(jsonStringCompliant, serializer));
 }
 if (value.ObjectProp != null)
 {
diff --git a/test/runtime/generic-input.json b/test/runtime/generic-input.json
index 3d153ba97b..afe3656468 100644
--- a/test/runtime/generic-input.json
+++ b/test/runtime/generic-input.json
@@ -44,6 +44,9 @@
           "type": "string"
         }
       }
+    },
+    "enumTest": {
+      "enum": ["test", "test2"]
     }
   },
   "patternProperties": {
@@ -52,7 +55,6 @@
     }
   },
   "required": [
-    "street_name",
     "house_number",
     "array_type"
   ]
diff --git a/test/runtime/runtime-csharp.ts b/test/runtime/runtime-csharp.ts
index 97f5c1c441..12598805c9 100644
--- a/test/runtime/runtime-csharp.ts
+++ b/test/runtime/runtime-csharp.ts
@@ -1,17 +1,43 @@
-import { CSHARP_JSON_SERIALIZER_PRESET, CSharpFileGenerator } from '../../';
+import { CSHARP_JSON_SERIALIZER_PRESET, CSHARP_NEWTONSOFT_SERIALIZER_PRESET, CSharpFileGenerator } from '../../';
 import path from 'path';
 import input from './generic-input.json';
 
-const generator = new CSharpFileGenerator({
-  presets: [CSHARP_JSON_SERIALIZER_PRESET]
-});
+async function generateJsonSerializer() {
+  const generator = new CSharpFileGenerator({
+    presets: [CSHARP_JSON_SERIALIZER_PRESET]
+  });
+  
+  await generator.generateToFiles(
+    input,
+    path.resolve(
+      // eslint-disable-next-line no-undef
+      __dirname,
+      './runtime-csharp/runtime-csharp/src/models/json_serializer'
+    ),
+    { namespace: 'com.mycompany.app.json_serializer' }
+  );  
+}
+async function generateNewtonsoft() {
+  const generator = new CSharpFileGenerator({
+    presets: [CSHARP_NEWTONSOFT_SERIALIZER_PRESET]
+  });
+  await generator.generateToFiles(
+    input,
+    path.resolve(
+      // eslint-disable-next-line no-undef
+      __dirname,
+      './runtime-csharp/runtime-csharp/src/models/newtonsoft'
+    ),
+    { namespace: 'com.mycompany.app.newtonsoft' }
+  ); 
+}
 
-generator.generateToFiles(
-  input,
-  path.resolve(
-    // eslint-disable-next-line no-undef
-    __dirname,
-    './runtime-csharp/runtime-csharp/src/models/json_serializer'
-  ),
-  { namespace: 'com.mycompany.app.generic' }
-);
+async function generateEverything() {
+  await Promise.all(
+    [
+      generateJsonSerializer(),
+      generateNewtonsoft()
+    ]
+  )
+}
+generateEverything();
\ No newline at end of file
diff --git a/test/runtime/runtime-csharp/runtime-csharp/runtime-csharp.csproj b/test/runtime/runtime-csharp/runtime-csharp/runtime-csharp.csproj
index 7cb79cdc30..a16ebd4679 100644
--- a/test/runtime/runtime-csharp/runtime-csharp/runtime-csharp.csproj
+++ b/test/runtime/runtime-csharp/runtime-csharp/runtime-csharp.csproj
@@ -15,6 +15,7 @@
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
     <PackageReference Include="NUnit.Analyzers" Version="3.3.0" />
     <PackageReference Include="coverlet.collector" Version="3.1.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>
 
   <ItemGroup>
@@ -24,6 +25,7 @@
     <None Remove="src\models\json_serializer\" />
     <None Remove="test\models\" />
     <None Remove="test\models\json_serializer\" />
+    <None Remove="Newtonsoft.Json" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="src\" />
diff --git a/test/runtime/runtime-csharp/runtime-csharp/test/models/json_serializer/Address.cs b/test/runtime/runtime-csharp/runtime-csharp/test/models/json_serializer/Address.cs
index 4275e8d7d7..bb50cce423 100644
--- a/test/runtime/runtime-csharp/runtime-csharp/test/models/json_serializer/Address.cs
+++ b/test/runtime/runtime-csharp/runtime-csharp/test/models/json_serializer/Address.cs
@@ -1,7 +1,7 @@
-using System.Text.Json;
-using com.mycompany.app.generic;
+using System.Text.Json;
+using com.mycompany.app.json_serializer;
 
-namespace runtime_csharp;
+namespace runtime_csharp.json_serializer;
 
 public class AddressTests
 {
@@ -18,13 +18,16 @@ public void TestSerializingFullModel()
         NestedObject nestedObject = new NestedObject();
         nestedObject.Test = "test";
         address.NestedObject = nestedObject;
-        address.StreetName = "test";
         address.Marriage = true;
         address.Members = 2;
         address.HouseNumber = 1;
         address.ArrayType = new dynamic[] { 1, "test" };
+        address.EnumTest = EnumTest.TEST;
+        address.AdditionalProperties = new Dictionary<string, dynamic>();
+        address.AdditionalProperties.Add("test_not_used", 2);
+
         string actualJsonString = JsonSerializer.Serialize(address);
-        string expectedJsonString = "{\"street_name\":\"test\",\"house_number\":1,\"marriage\":true,\"members\":2,\"array_type\":[1,\"test\"],\"nestedObject\":{\"test\":\"test\"}}";
+        string expectedJsonString = "{\"house_number\":1,\"marriage\":true,\"members\":2,\"array_type\":[1,\"test\"],\"nestedObject\":{\"test\":\"test\"},\"enumTest\":\"test\",\"test_not_used\":2}";
         Assert.That(actualJsonString, Is.EqualTo(expectedJsonString));
     }
 }
diff --git a/test/runtime/runtime-csharp/runtime-csharp/test/models/newtonsoft/Address.cs b/test/runtime/runtime-csharp/runtime-csharp/test/models/newtonsoft/Address.cs
new file mode 100644
index 0000000000..896823abbb
--- /dev/null
+++ b/test/runtime/runtime-csharp/runtime-csharp/test/models/newtonsoft/Address.cs
@@ -0,0 +1,35 @@
+using System.Text.Json;
+using com.mycompany.app.newtonsoft;
+using Newtonsoft.Json;
+
+namespace runtime_csharp.newtonsoft;
+
+public class AddressTests
+{
+
+    [SetUp]
+    public void Setup()
+    {
+    }
+
+    [Test]
+    public void TestSerializingFullModel()
+    {
+        Address address = new Address();
+        NestedObject nestedObject = new NestedObject();
+        nestedObject.Test = "test";
+        address.NestedObject = nestedObject;
+        address.Marriage = true;
+        address.Members = 2;
+        address.HouseNumber = 1;
+        address.ArrayType = new dynamic[] { 1, "test" };
+        address.EnumTest = EnumTest.TEST;
+        address.AdditionalProperties = new Dictionary<string, dynamic>();
+        address.AdditionalProperties.Add("test_not_used", 2);
+
+        string actualJsonString = JsonConvert.SerializeObject(address);
+        string expectedJsonString = "{\"house_number\":1.0,\"marriage\":true,\"members\":2,\"array_type\":[1,\"test\"],\"nestedObject\":{\"test\":\"test\"},\"enumTest\":\"test\",\"test_not_used\":2}";
+        Assert.That(actualJsonString, Is.EqualTo(expectedJsonString));
+    }
+}
+