diff --git a/NetSerializer/TypeSerializers/ArraySerializer.cs b/NetSerializer/TypeSerializers/ArraySerializer.cs
index a69887a..afa9685 100644
--- a/NetSerializer/TypeSerializers/ArraySerializer.cs
+++ b/NetSerializer/TypeSerializers/ArraySerializer.cs
@@ -17,7 +17,7 @@ namespace NetSerializer
 {
 	class ArraySerializer : IDynamicTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			if (!type.IsArray)
 				return false;
@@ -28,12 +28,12 @@ public bool Handles(Type type)
 			return true;
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			return new[] { typeof(uint), type.GetElementType() };
 		}
 
-		public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			var elemType = type.GetElementType();
 
@@ -105,7 +105,7 @@ public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator i
 			il.Emit(OpCodes.Ret);
 		}
 
-		public void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			var elemType = type.GetElementType();
 
diff --git a/NetSerializer/TypeSerializers/DictionarySerializer.cs b/NetSerializer/TypeSerializers/DictionarySerializer.cs
index b061ced..fac4e2a 100644
--- a/NetSerializer/TypeSerializers/DictionarySerializer.cs
+++ b/NetSerializer/TypeSerializers/DictionarySerializer.cs
@@ -18,7 +18,7 @@ namespace NetSerializer
 {
 	public class DictionarySerializer : IStaticTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			if (!type.IsGenericType)
 				return false;
@@ -28,7 +28,7 @@ public bool Handles(Type type)
 			return genTypeDef == typeof(Dictionary<,>);
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			// Dictionary<K,V> is stored as KeyValuePair<K,V>[]
 
@@ -39,7 +39,7 @@ public IEnumerable<Type> GetSubtypes(Type type)
 			return new[] { serializedType };
 		}
 
-		public MethodInfo GetStaticWriter(Type type)
+		public virtual MethodInfo GetStaticWriter(Type type)
 		{
 			Debug.Assert(type.IsGenericType);
 
@@ -61,7 +61,7 @@ public MethodInfo GetStaticWriter(Type type)
 			return writer;
 		}
 
-		public MethodInfo GetStaticReader(Type type)
+		public virtual MethodInfo GetStaticReader(Type type)
 		{
 			Debug.Assert(type.IsGenericType);
 
diff --git a/NetSerializer/TypeSerializers/EnumSerializer.cs b/NetSerializer/TypeSerializers/EnumSerializer.cs
index cf626ca..a98444a 100644
--- a/NetSerializer/TypeSerializers/EnumSerializer.cs
+++ b/NetSerializer/TypeSerializers/EnumSerializer.cs
@@ -18,19 +18,19 @@ namespace NetSerializer
 {
 	public class EnumSerializer : IStaticTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			return type.IsEnum;
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			var underlyingType = Enum.GetUnderlyingType(type);
 
 			return new[] { underlyingType };
 		}
 
-		public MethodInfo GetStaticWriter(Type type)
+		public virtual MethodInfo GetStaticWriter(Type type)
 		{
 			Debug.Assert(type.IsEnum);
 
@@ -39,7 +39,7 @@ public MethodInfo GetStaticWriter(Type type)
 			return Primitives.GetWritePrimitive(underlyingType);
 		}
 
-		public MethodInfo GetStaticReader(Type type)
+		public virtual MethodInfo GetStaticReader(Type type)
 		{
 			Debug.Assert(type.IsEnum);
 
diff --git a/NetSerializer/TypeSerializers/GenericSerializer.cs b/NetSerializer/TypeSerializers/GenericSerializer.cs
index 0fcdb6c..c215acb 100644
--- a/NetSerializer/TypeSerializers/GenericSerializer.cs
+++ b/NetSerializer/TypeSerializers/GenericSerializer.cs
@@ -7,19 +7,15 @@
  */
 
 using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.IO;
-using System.Linq;
+using System.Collections.Generic;   
 using System.Reflection;
-using System.Reflection.Emit;
-using System.Text;
+using System.Reflection.Emit;  
 
 namespace NetSerializer
 {
 	public class GenericSerializer : IDynamicTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			if (!type.IsSerializable)
 				throw new NotSupportedException(String.Format("Type {0} is not marked as Serializable", type.FullName));
@@ -30,7 +26,7 @@ public bool Handles(Type type)
 			return true;
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			var fields = Helpers.GetFieldInfos(type);
 
@@ -38,7 +34,7 @@ public IEnumerable<Type> GetSubtypes(Type type)
 				yield return field.FieldType;
 		}
 
-		public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			// arg0: Serializer, arg1: Stream, arg2: value
 
@@ -68,7 +64,7 @@ public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator i
 			il.Emit(OpCodes.Ret);
 		}
 
-		public void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			// arg0: Serializer, arg1: stream, arg2: out value
 
diff --git a/NetSerializer/TypeSerializers/NoOpSerializer.cs b/NetSerializer/TypeSerializers/NoOpSerializer.cs
index 72b5c03..88489d0 100644
--- a/NetSerializer/TypeSerializers/NoOpSerializer.cs
+++ b/NetSerializer/TypeSerializers/NoOpSerializer.cs
@@ -29,7 +29,7 @@ public NoOpSerializer(IEnumerable<Type> types, bool handleSubclasses)
 			m_handleSubclasses = handleSubclasses;
 		}
 
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			if (m_handleSubclasses)
 				return m_types.Any(t => type.IsSubclassOf(t));
@@ -37,17 +37,17 @@ public bool Handles(Type type)
 				return m_types.Contains(type);
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			return new Type[0];
 		}
 
-		public MethodInfo GetStaticWriter(Type type)
+		public virtual MethodInfo GetStaticWriter(Type type)
 		{
 			return this.GetType().GetMethod("Serialize", BindingFlags.Static | BindingFlags.Public);
 		}
 
-		public MethodInfo GetStaticReader(Type type)
+		public virtual MethodInfo GetStaticReader(Type type)
 		{
 			return this.GetType().GetMethod("Deserialize", BindingFlags.Static | BindingFlags.Public);
 		}
diff --git a/NetSerializer/TypeSerializers/NullableSerializer.cs b/NetSerializer/TypeSerializers/NullableSerializer.cs
index 9964cb2..ffd47f9 100644
--- a/NetSerializer/TypeSerializers/NullableSerializer.cs
+++ b/NetSerializer/TypeSerializers/NullableSerializer.cs
@@ -15,7 +15,7 @@ namespace NetSerializer
 {
 	public class NullableSerializer : IDynamicTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			if (!type.IsGenericType)
 				return false;
@@ -25,14 +25,14 @@ public bool Handles(Type type)
 			return genTypeDef == typeof(Nullable<>);
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			var genArgs = type.GetGenericArguments();
 
 			return new[] { typeof(bool), genArgs[0] };
 		}
 
-		public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			var valueType = type.GetGenericArguments()[0];
 
@@ -66,7 +66,7 @@ public void GenerateWriterMethod(Serializer serializer, Type type, ILGenerator i
 			il.Emit(OpCodes.Ret);
 		}
 
-		public void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
+		public virtual void GenerateReaderMethod(Serializer serializer, Type type, ILGenerator il)
 		{
 			var valueType = type.GetGenericArguments()[0];
 
diff --git a/NetSerializer/TypeSerializers/ObjectSerializer.cs b/NetSerializer/TypeSerializers/ObjectSerializer.cs
index 2ca28a6..2f84ccf 100644
--- a/NetSerializer/TypeSerializers/ObjectSerializer.cs
+++ b/NetSerializer/TypeSerializers/ObjectSerializer.cs
@@ -16,22 +16,22 @@ namespace NetSerializer
 {
 	class ObjectSerializer : IStaticTypeSerializer
 	{
-		public bool Handles(Type type)
+		public virtual bool Handles(Type type)
 		{
 			return type == typeof(object);
 		}
 
-		public IEnumerable<Type> GetSubtypes(Type type)
+		public virtual IEnumerable<Type> GetSubtypes(Type type)
 		{
 			return new Type[0];
 		}
 
-		public MethodInfo GetStaticWriter(Type type)
+		public virtual MethodInfo GetStaticWriter(Type type)
 		{
 			return typeof(ObjectSerializer).GetMethod("Serialize", BindingFlags.Static | BindingFlags.Public);
 		}
 
-		public MethodInfo GetStaticReader(Type type)
+		public virtual MethodInfo GetStaticReader(Type type)
 		{
 			return typeof(ObjectSerializer).GetMethod("Deserialize", BindingFlags.Static | BindingFlags.Public);
 		}