diff --git a/src/Dhgms.Nucleotide.GenerationTests/Dhgms.Nucleotide.SampleApp.csproj b/src/Dhgms.Nucleotide.GenerationTests/Dhgms.Nucleotide.SampleApp.csproj
index ac04a9f3..f1711e35 100644
--- a/src/Dhgms.Nucleotide.GenerationTests/Dhgms.Nucleotide.SampleApp.csproj
+++ b/src/Dhgms.Nucleotide.GenerationTests/Dhgms.Nucleotide.SampleApp.csproj
@@ -2,8 +2,9 @@
 
   <PropertyGroup>
     <TargetFramework>net8.0-windows10.0.19041</TargetFramework>
-    <LangVersion>9</LangVersion>
+    <LangVersion>latest</LangVersion>
     <IsPackable>false</IsPackable>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Dhgms.Nucleotide.Generators/Features/Model/KeyedModelClassGeneratorProcessor.cs b/src/Dhgms.Nucleotide.Generators/Features/Model/KeyedModelClassGeneratorProcessor.cs
index fcbe3e7a..65e52a45 100644
--- a/src/Dhgms.Nucleotide.Generators/Features/Model/KeyedModelClassGeneratorProcessor.cs
+++ b/src/Dhgms.Nucleotide.Generators/Features/Model/KeyedModelClassGeneratorProcessor.cs
@@ -67,7 +67,7 @@ protected override IEnumerable<PropertyDeclarationSyntax> GetPropertyDeclaration
 
             return new[]
             {
-                GetReadOnlyPropertyDeclaration(idColumn)
+                GetPropertyDeclaration(idColumn)
             };
         }
 
diff --git a/src/Dhgms.Nucleotide.Generators/Features/Model/UnkeyedModelClassGeneratorProcessor.cs b/src/Dhgms.Nucleotide.Generators/Features/Model/UnkeyedModelClassGeneratorProcessor.cs
index d73fbd18..1c1c521e 100644
--- a/src/Dhgms.Nucleotide.Generators/Features/Model/UnkeyedModelClassGeneratorProcessor.cs
+++ b/src/Dhgms.Nucleotide.Generators/Features/Model/UnkeyedModelClassGeneratorProcessor.cs
@@ -77,7 +77,12 @@ private void DoPropertyDeclarations(InterfaceGenerationModel interfaceGeneration
 
         private PropertyDeclarationSyntax GetPropertyDeclaration(PropertyGenerationModel propertyGenerationModel)
         {
-            var type = SyntaxFactory.ParseName(propertyGenerationModel.TypeName);
+            var type = SyntaxFactory.ParseTypeName(propertyGenerationModel.TypeName);
+            if (propertyGenerationModel.Optional)
+            {
+                type = SyntaxFactory.NullableType(type);
+            }
+
             var identifier = propertyGenerationModel.Name;
 
             var summary = new[]
@@ -94,6 +99,11 @@ private PropertyDeclarationSyntax GetPropertyDeclaration(PropertyGenerationModel
                         SyntaxFactory.List(accessorList)
                     ))
                 .WithLeadingTrivia(summary);
+            // HACK: will rewrite this once I replace the type with ISymbol
+            if (!propertyGenerationModel.Optional && propertyGenerationModel.TypeName.Equals("string"))
+            {
+                result = result.AddModifiers(SyntaxFactory.Token(SyntaxKind.RequiredKeyword));
+            }
             return result;
         }
 
@@ -111,9 +121,14 @@ private static AccessorDeclarationSyntax[] GetPropertyAccessorDeclarationSyntaxC
 
         protected override PropertyDeclarationSyntax GetPropertyDeclaration(PropertyInfoBase propertyInfo, AccessorDeclarationSyntax[] accessorList, IEnumerable<SyntaxTrivia> summary)
         {
-            var type = SyntaxFactory.ParseName(propertyInfo.NetDataType);
+            var type = SyntaxFactory.ParseTypeName(propertyInfo.NetDataType);
             var identifier = propertyInfo.Name;
 
+            if (propertyInfo.Optional)
+            {
+                type = SyntaxFactory.NullableType(type);
+            }
+
             var attributes = GetAttributesForProperty(propertyInfo);
             var result = SyntaxFactory.PropertyDeclaration(type, identifier)
                 .AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword))
@@ -123,6 +138,12 @@ protected override PropertyDeclarationSyntax GetPropertyDeclaration(PropertyInfo
                     ))
                 .WithLeadingTrivia(summary);
 
+            // HACK: will rewrite this once I replace the type with ISymbol
+            if (!propertyInfo.Optional && propertyInfo.NetDataType.Equals("string"))
+            {
+                result = result.AddModifiers(SyntaxFactory.Token(SyntaxKind.RequiredKeyword));
+            }
+
             if (attributes.Count > 0)
             {
                 var attributeLists = SyntaxFactory.AttributeList(attributes);
diff --git a/src/Dhgms.Nucleotide.Generators/GeneratorProcessors/BaseClassLevelCodeGeneratorProcessor.cs b/src/Dhgms.Nucleotide.Generators/GeneratorProcessors/BaseClassLevelCodeGeneratorProcessor.cs
index ce85b850..608a76ed 100644
--- a/src/Dhgms.Nucleotide.Generators/GeneratorProcessors/BaseClassLevelCodeGeneratorProcessor.cs
+++ b/src/Dhgms.Nucleotide.Generators/GeneratorProcessors/BaseClassLevelCodeGeneratorProcessor.cs
@@ -424,6 +424,11 @@ protected override PropertyDeclarationSyntax GetPropertyDeclaration(PropertyInfo
             var type = SyntaxFactory.ParseTypeName(propertyInfo.NetDataType);
             var identifier = propertyInfo.Name;
 
+            if (propertyInfo.Optional)
+            {
+                type = SyntaxFactory.NullableType(type);
+            }
+
             var attributes = GetAttributesForProperty(propertyInfo);
             var result = SyntaxFactory.PropertyDeclaration(type, identifier)
                 .AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword))
@@ -433,6 +438,12 @@ protected override PropertyDeclarationSyntax GetPropertyDeclaration(PropertyInfo
                     ))
                 .WithLeadingTrivia(summary);
 
+            // HACK: will rewrite this once I replace the type with ISymbol
+            if (!propertyInfo.Optional && propertyInfo.NetDataType.Equals("string"))
+            {
+                result = result.AddModifiers(SyntaxFactory.Token(SyntaxKind.RequiredKeyword));
+            }
+
             if (attributes.Count > 0)
             {
                 var attributeLists = SyntaxFactory.AttributeList(attributes);
diff --git a/src/Dhgms.Nucleotide.Generators/Models/IPropertyGenerationModel.cs b/src/Dhgms.Nucleotide.Generators/Models/IPropertyGenerationModel.cs
index 5f4a5c9f..92128c39 100644
--- a/src/Dhgms.Nucleotide.Generators/Models/IPropertyGenerationModel.cs
+++ b/src/Dhgms.Nucleotide.Generators/Models/IPropertyGenerationModel.cs
@@ -12,6 +12,7 @@ namespace Dhgms.Nucleotide.Generators.Models
     public record PropertyGenerationModel(
         string TypeName,
         string Name,
-        PropertyAccessorFlags PropertyAccessorFlags)
+        PropertyAccessorFlags PropertyAccessorFlags,
+        bool Optional)
         : INameable;
 }
diff --git a/src/Dhgms.Nucleotide.ModelTests/InterfaceGenerationModels/Whipstaff/Entities/NameableInterfaceGenerationModel.cs b/src/Dhgms.Nucleotide.ModelTests/InterfaceGenerationModels/Whipstaff/Entities/NameableInterfaceGenerationModel.cs
index da9eb094..54b77ef7 100644
--- a/src/Dhgms.Nucleotide.ModelTests/InterfaceGenerationModels/Whipstaff/Entities/NameableInterfaceGenerationModel.cs
+++ b/src/Dhgms.Nucleotide.ModelTests/InterfaceGenerationModels/Whipstaff/Entities/NameableInterfaceGenerationModel.cs
@@ -7,7 +7,7 @@ public sealed record NameableInterfaceGenerationModel() : InterfaceGenerationMod
         "Whipstaff.Core.Entities.INameable",
         new List<PropertyGenerationModel>
         {
-            new ("string", "Name", PropertyAccessorFlags.Get)
+            new ("string", "Name", PropertyAccessorFlags.Get, false)
         },
         new List<IInterfaceMethodGenerationModel>(),
         new List<InterfaceGenerationModel>());
diff --git a/src/Dhgms.Nucleotide.ModelTests/ModelGenerationDetails.cs b/src/Dhgms.Nucleotide.ModelTests/ModelGenerationDetails.cs
index 78aec872..e79673f3 100644
--- a/src/Dhgms.Nucleotide.ModelTests/ModelGenerationDetails.cs
+++ b/src/Dhgms.Nucleotide.ModelTests/ModelGenerationDetails.cs
@@ -161,7 +161,7 @@ public static class SampleEntityFrameworkModelGenerationModel
             ClassRemarks = "Represents a User",
             Properties = [
                 new ClrStringPropertyInfo(CollectionType.None, "Username", "Username for the user", false, 3, 255, false, false, null),
-                new ClrStringPropertyInfo(CollectionType.None, "PasswordHash", "Hash of the user password", false, 0, 1024, false, false, null)
+                new ClrStringPropertyInfo(CollectionType.None, "PasswordHash", "Hash of the user password", true, 0, 1024, false, false, null)
             ]
         };