diff --git a/LanguageExt.CodeGen/LanguageExt.CodeGen.csproj b/LanguageExt.CodeGen/LanguageExt.CodeGen.csproj
index f0fcadea0..a0c59ec72 100644
--- a/LanguageExt.CodeGen/LanguageExt.CodeGen.csproj
+++ b/LanguageExt.CodeGen/LanguageExt.CodeGen.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" DefaultTargets="Build">
+<Project Sdk="Microsoft.NET.Sdk" DefaultTargets="Build">
 
     <PropertyGroup>
         <PackageVersion>3.3.18</PackageVersion>
diff --git a/LanguageExt.Core/ClassInstances/Applicative/ApplTryAsync.cs b/LanguageExt.Core/ClassInstances/Applicative/ApplTryAsync.cs
index 4580cf95e..5280eaaac 100644
--- a/LanguageExt.Core/ClassInstances/Applicative/ApplTryAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Applicative/ApplTryAsync.cs
@@ -3,6 +3,7 @@
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Applicative/ApplTryOptionAsync.cs b/LanguageExt.Core/ClassInstances/Applicative/ApplTryOptionAsync.cs
index 5f2d47dd0..2c8909f94 100644
--- a/LanguageExt.Core/ClassInstances/Applicative/ApplTryOptionAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Applicative/ApplTryOptionAsync.cs
@@ -3,6 +3,7 @@
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Eq/EqResult.cs b/LanguageExt.Core/ClassInstances/Eq/EqResult.cs
index 300723ed5..3fcde55b6 100644
--- a/LanguageExt.Core/ClassInstances/Eq/EqResult.cs
+++ b/LanguageExt.Core/ClassInstances/Eq/EqResult.cs
@@ -1,6 +1,6 @@
-
-using LanguageExt.TypeClasses;
+using LanguageExt.TypeClasses;
 using System.Reflection;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Functor/FTryAsync.cs b/LanguageExt.Core/ClassInstances/Functor/FTryAsync.cs
index fa251a0cb..344577527 100644
--- a/LanguageExt.Core/ClassInstances/Functor/FTryAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Functor/FTryAsync.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 using LanguageExt.TypeClasses;
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
diff --git a/LanguageExt.Core/ClassInstances/Functor/FTryOptionAsync.cs b/LanguageExt.Core/ClassInstances/Functor/FTryOptionAsync.cs
index 3f0e46ad4..d426d8675 100644
--- a/LanguageExt.Core/ClassInstances/Functor/FTryOptionAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Functor/FTryOptionAsync.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 using LanguageExt.TypeClasses;
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTry.cs b/LanguageExt.Core/ClassInstances/Monad/MTry.cs
index 79d138851..4332cd57b 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTry.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTry.cs
@@ -2,6 +2,7 @@
 using LanguageExt.TypeClasses;
 using System.Diagnostics.Contracts;
 using static LanguageExt.Prelude;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTryAsync.cs b/LanguageExt.Core/ClassInstances/Monad/MTryAsync.cs
index 666775a83..5461cee2c 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTryAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTryAsync.cs
@@ -1,7 +1,7 @@
 using System;
 using LanguageExt.TypeClasses;
 using System.Diagnostics.Contracts;
-using static LanguageExt.Prelude;
+using LanguageExt.Common;
 using System.Threading.Tasks;
 
 namespace LanguageExt.ClassInstances
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTryFirstAsync.cs b/LanguageExt.Core/ClassInstances/Monad/MTryFirstAsync.cs
index 92ca21682..7becfa51a 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTryFirstAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTryFirstAsync.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 using LanguageExt.TypeClasses;
 using System.Diagnostics.Contracts;
 using static LanguageExt.Prelude;
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTryOption.cs b/LanguageExt.Core/ClassInstances/Monad/MTryOption.cs
index c803a15bb..b67374239 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTryOption.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTryOption.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 using LanguageExt.TypeClasses;
 using System.Diagnostics.Contracts;
 using static LanguageExt.Prelude;
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTryOptionAsync.cs b/LanguageExt.Core/ClassInstances/Monad/MTryOptionAsync.cs
index add8ecff0..86cb55982 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTryOptionAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTryOptionAsync.cs
@@ -2,6 +2,7 @@
 using LanguageExt.TypeClasses;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Monad/MTryOptionFirstAsync.cs b/LanguageExt.Core/ClassInstances/Monad/MTryOptionFirstAsync.cs
index 346084546..f6b81cb9a 100644
--- a/LanguageExt.Core/ClassInstances/Monad/MTryOptionFirstAsync.cs
+++ b/LanguageExt.Core/ClassInstances/Monad/MTryOptionFirstAsync.cs
@@ -3,6 +3,7 @@
 using System.Diagnostics.Contracts;
 using static LanguageExt.Prelude;
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt.ClassInstances
 {
diff --git a/LanguageExt.Core/ClassInstances/Ord/OrdResult.cs b/LanguageExt.Core/ClassInstances/Ord/OrdResult.cs
index b75bf7a93..0695b2333 100644
--- a/LanguageExt.Core/ClassInstances/Ord/OrdResult.cs
+++ b/LanguageExt.Core/ClassInstances/Ord/OrdResult.cs
@@ -1,4 +1,4 @@
-
+using LanguageExt.Common;
 using LanguageExt.TypeClasses;
 using System.Reflection;
 
diff --git a/LanguageExt.Core/DataTypes/Result/OptionalResult.cs b/LanguageExt.Core/Common/Result/OptionalResult.cs
similarity index 99%
rename from LanguageExt.Core/DataTypes/Result/OptionalResult.cs
rename to LanguageExt.Core/Common/Result/OptionalResult.cs
index 13ecb842c..4217018e3 100644
--- a/LanguageExt.Core/DataTypes/Result/OptionalResult.cs
+++ b/LanguageExt.Core/Common/Result/OptionalResult.cs
@@ -6,7 +6,7 @@
 using LanguageExt.ClassInstances;
 using System.Threading.Tasks;
 
-namespace LanguageExt
+namespace LanguageExt.Common
 {
     internal enum OptionalResultState : byte
     {
diff --git a/LanguageExt.Core/DataTypes/Result/Result.cs b/LanguageExt.Core/Common/Result/Result.cs
similarity index 99%
rename from LanguageExt.Core/DataTypes/Result/Result.cs
rename to LanguageExt.Core/Common/Result/Result.cs
index f6b9a8c6c..b84c3e9d3 100644
--- a/LanguageExt.Core/DataTypes/Result/Result.cs
+++ b/LanguageExt.Core/Common/Result/Result.cs
@@ -5,7 +5,7 @@
 using LanguageExt.ClassInstances;
 using System.Threading.Tasks;
 
-namespace LanguageExt
+namespace LanguageExt.Common
 {
     public enum ResultState : byte
     {
diff --git a/LanguageExt.Core/DataTypes/RWS/RWS.Extensions.cs b/LanguageExt.Core/DataTypes/RWS/RWS.Extensions.cs
index 570534370..7b1d5255f 100644
--- a/LanguageExt.Core/DataTypes/RWS/RWS.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/RWS/RWS.Extensions.cs
@@ -1,5 +1,6 @@
 using System;
 using LanguageExt;
+using LanguageExt.Common;
 using static LanguageExt.Prelude;
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
diff --git a/LanguageExt.Core/DataTypes/Reader/Reader.Extensions.cs b/LanguageExt.Core/DataTypes/Reader/Reader.Extensions.cs
index 05418aa21..90b3a7399 100644
--- a/LanguageExt.Core/DataTypes/Reader/Reader.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/Reader/Reader.Extensions.cs
@@ -1,13 +1,8 @@
 using System;
-using System.Linq;
 using LanguageExt;
-using LanguageExt.TypeClasses;
+using LanguageExt.Common;
 using static LanguageExt.Prelude;
-using static LanguageExt.TypeClass;
 using System.Diagnostics.Contracts;
-using System.Threading.Tasks;
-using System.Collections.Generic;
-using System.ComponentModel;
 using LanguageExt.ClassInstances;
 
 /// <summary>
diff --git a/LanguageExt.Core/DataTypes/State/State.Extensions.cs b/LanguageExt.Core/DataTypes/State/State.Extensions.cs
index 920f66d54..0c742ee00 100644
--- a/LanguageExt.Core/DataTypes/State/State.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/State/State.Extensions.cs
@@ -1,10 +1,10 @@
 using System;
-using System.Linq;
 using LanguageExt;
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
 using System.Collections.Generic;
 using LanguageExt.ClassInstances;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for State
diff --git a/LanguageExt.Core/DataTypes/Try/Task.Try.Extensions.cs b/LanguageExt.Core/DataTypes/Try/Task.Try.Extensions.cs
index 84f44124a..2466ca82a 100644
--- a/LanguageExt.Core/DataTypes/Try/Task.Try.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/Try/Task.Try.Extensions.cs
@@ -3,7 +3,7 @@
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using LanguageExt.TypeClasses;
-using System.Collections.Generic;
+using LanguageExt.Common;
 
 public static class TaskTryExtensions
 {
diff --git a/LanguageExt.Core/DataTypes/Try/Try.Extensions.Async.cs b/LanguageExt.Core/DataTypes/Try/Try.Extensions.Async.cs
index 799cba860..3ad0cdada 100644
--- a/LanguageExt.Core/DataTypes/Try/Try.Extensions.Async.cs
+++ b/LanguageExt.Core/DataTypes/Try/Try.Extensions.Async.cs
@@ -1,14 +1,11 @@
 using System;
-using System.Linq;
-using System.ComponentModel;
 using LanguageExt;
 using static LanguageExt.Prelude;
 using static LanguageExt.TypeClass;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using LanguageExt.TypeClasses;
-using System.Collections.Generic;
-using LanguageExt.ClassInstances;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the Try monad
diff --git a/LanguageExt.Core/DataTypes/Try/Try.Extensions.cs b/LanguageExt.Core/DataTypes/Try/Try.Extensions.cs
index 6ff29c399..bf9840f0c 100644
--- a/LanguageExt.Core/DataTypes/Try/Try.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/Try/Try.Extensions.cs
@@ -7,6 +7,7 @@
 using LanguageExt.TypeClasses;
 using static LanguageExt.Prelude;
 using static LanguageExt.TypeClass;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the Try monad
diff --git a/LanguageExt.Core/DataTypes/Try/Try.Prelude.cs b/LanguageExt.Core/DataTypes/Try/Try.Prelude.cs
index 719bd6610..3de2d034b 100644
--- a/LanguageExt.Core/DataTypes/Try/Try.Prelude.cs
+++ b/LanguageExt.Core/DataTypes/Try/Try.Prelude.cs
@@ -1,9 +1,8 @@
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
-using static LanguageExt.TypeClass;
+using LanguageExt.Common;
 using System;
 using System.Diagnostics.Contracts;
-using System.Linq;
 using System.Collections.Generic;
 
 namespace LanguageExt
diff --git a/LanguageExt.Core/DataTypes/Try/Try.cs b/LanguageExt.Core/DataTypes/Try/Try.cs
index ce4a05018..8709df50d 100644
--- a/LanguageExt.Core/DataTypes/Try/Try.cs
+++ b/LanguageExt.Core/DataTypes/Try/Try.cs
@@ -1,4 +1,6 @@
-namespace LanguageExt
+using LanguageExt.Common;
+
+namespace LanguageExt
 {
     /// <summary>
     /// The Try monad captures exceptions and uses them to cancel the
diff --git a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Extensions.cs b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Extensions.cs
index 4b707e46e..d813b54dd 100644
--- a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Extensions.cs
@@ -8,6 +8,7 @@
 using LanguageExt.TypeClasses;
 using System.Collections.Generic;
 using LanguageExt.ClassInstances;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the TryAsync monad
diff --git a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Prelude.cs b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Prelude.cs
index f67b14a36..12e5318d5 100644
--- a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Prelude.cs
+++ b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.Prelude.cs
@@ -1,9 +1,8 @@
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
-using static LanguageExt.TypeClass;
+using LanguageExt.Common;
 using System;
 using System.Diagnostics.Contracts;
-using System.Linq;
 using System.Threading.Tasks;
 
 namespace LanguageExt
diff --git a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.cs b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.cs
index 9727019f8..a622ea78f 100644
--- a/LanguageExt.Core/DataTypes/TryAsync/TryAsync.cs
+++ b/LanguageExt.Core/DataTypes/TryAsync/TryAsync.cs
@@ -1,4 +1,5 @@
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt
 {
diff --git a/LanguageExt.Core/DataTypes/TryOption/Task.TryOption.Extensions.cs b/LanguageExt.Core/DataTypes/TryOption/Task.TryOption.Extensions.cs
index 99e05b90f..c80ab27ac 100644
--- a/LanguageExt.Core/DataTypes/TryOption/Task.TryOption.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/TryOption/Task.TryOption.Extensions.cs
@@ -1,14 +1,9 @@
 using System;
-using System.Linq;
 using LanguageExt;
-using static LanguageExt.Prelude;
-using static LanguageExt.TypeClass;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using LanguageExt.TypeClasses;
-using LanguageExt.ClassInstances;
-using System.ComponentModel;
-using System.Collections.Generic;
+using LanguageExt.Common;
 
 public static class TaskTryOptionExtensions
 {
diff --git a/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.Async.cs b/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.Async.cs
index 74194cf55..59c8e0340 100644
--- a/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.Async.cs
+++ b/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.Async.cs
@@ -1,14 +1,10 @@
 using System;
-using System.Linq;
 using LanguageExt;
 using static LanguageExt.Prelude;
-using static LanguageExt.TypeClass;
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using LanguageExt.TypeClasses;
-using LanguageExt.ClassInstances;
-using System.ComponentModel;
-using System.Collections.Generic;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the Try monad
diff --git a/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.cs b/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.cs
index fba9d282a..2a2cb8865 100644
--- a/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/TryOption/TryOption.Extensions.cs
@@ -9,6 +9,7 @@
 using LanguageExt.ClassInstances;
 using System.ComponentModel;
 using System.Collections.Generic;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the Try monad
diff --git a/LanguageExt.Core/DataTypes/TryOption/TryOption.Prelude.cs b/LanguageExt.Core/DataTypes/TryOption/TryOption.Prelude.cs
index 525c7f6ab..f1a5a018e 100644
--- a/LanguageExt.Core/DataTypes/TryOption/TryOption.Prelude.cs
+++ b/LanguageExt.Core/DataTypes/TryOption/TryOption.Prelude.cs
@@ -1,9 +1,8 @@
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
-using static LanguageExt.TypeClass;
+using LanguageExt.Common;
 using System;
 using System.Diagnostics.Contracts;
-using System.Linq;
 
 namespace LanguageExt
 {
diff --git a/LanguageExt.Core/DataTypes/TryOption/TryOption.cs b/LanguageExt.Core/DataTypes/TryOption/TryOption.cs
index 423f5ef3c..7d2ceea48 100644
--- a/LanguageExt.Core/DataTypes/TryOption/TryOption.cs
+++ b/LanguageExt.Core/DataTypes/TryOption/TryOption.cs
@@ -1,4 +1,5 @@
-
+using LanguageExt.Common;
+
 namespace LanguageExt
 {
     /// <summary>
diff --git a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Extensions.cs b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Extensions.cs
index d856c4105..5629ba7c9 100644
--- a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Extensions.cs
@@ -9,6 +9,7 @@
 using System.Collections.Generic;
 using LanguageExt.ClassInstances;
 using LanguageExt.DataTypes.Serialisation;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for the TryOptionAsync monad
diff --git a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Prelude.cs b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Prelude.cs
index 8d236397f..001f6eb66 100644
--- a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Prelude.cs
+++ b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.Prelude.cs
@@ -1,9 +1,8 @@
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
-using static LanguageExt.TypeClass;
+using LanguageExt.Common;
 using System;
 using System.Diagnostics.Contracts;
-using System.Linq;
 using System.Threading.Tasks;
 
 namespace LanguageExt
diff --git a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.cs b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.cs
index a3fd52c80..105b3d257 100644
--- a/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.cs
+++ b/LanguageExt.Core/DataTypes/TryOptionAsync/TryOptionAsync.cs
@@ -1,4 +1,5 @@
 using System.Threading.Tasks;
+using LanguageExt.Common;
 
 namespace LanguageExt
 {
diff --git a/LanguageExt.Core/DataTypes/Writer/Writer.Extensions.cs b/LanguageExt.Core/DataTypes/Writer/Writer.Extensions.cs
index d6ad4259c..aefbee16b 100644
--- a/LanguageExt.Core/DataTypes/Writer/Writer.Extensions.cs
+++ b/LanguageExt.Core/DataTypes/Writer/Writer.Extensions.cs
@@ -1,11 +1,10 @@
 using System;
-using System.Linq;
 using LanguageExt;
 using static LanguageExt.Prelude;
 using System.Diagnostics.Contracts;
-using System.Collections.Generic;
 using LanguageExt.ClassInstances;
 using LanguageExt.TypeClasses;
+using LanguageExt.Common;
 
 /// <summary>
 /// Extension methods for Writer
diff --git a/LanguageExt.Core/LanguageExt.Core.csproj b/LanguageExt.Core/LanguageExt.Core.csproj
index d87af5313..99f4a15f6 100644
--- a/LanguageExt.Core/LanguageExt.Core.csproj
+++ b/LanguageExt.Core/LanguageExt.Core.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
     <PropertyGroup Label="Configuration" Condition="'$(Configuration)'=='Debug'">
         <DefineConstants>TRACE;DEBUG</DefineConstants>
     </PropertyGroup>
diff --git a/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchAsync.cs b/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchAsync.cs
index e5ccfadc5..7e153bcb1 100644
--- a/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchAsync.cs
+++ b/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchAsync.cs
@@ -3,6 +3,7 @@
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using static LanguageExt.Prelude;
+using LanguageExt.Common;
 
 namespace LanguageExt
 {
@@ -126,4 +127,4 @@ public static class ExceptionAsyncExtensions
         public static LanguageExt.ExceptionMatchAsync<R> Match<R>(this Task<Result<R>> self) =>
             new LanguageExt.ExceptionMatchAsync<R>(self);
     }
-}
\ No newline at end of file
+}
diff --git a/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchOptionalAsync.cs b/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchOptionalAsync.cs
index 9e246466f..085e3f097 100644
--- a/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchOptionalAsync.cs
+++ b/LanguageExt.Core/Utility/ExceptionMatch/ExceptionMatchOptionalAsync.cs
@@ -3,6 +3,7 @@
 using System.Diagnostics.Contracts;
 using System.Threading.Tasks;
 using static LanguageExt.Prelude;
+using LanguageExt.Common;
 
 namespace LanguageExt
 {
diff --git a/LanguageExt.Tests/ResultTests.cs b/LanguageExt.Tests/ResultTests.cs
index a1d75410a..14046b437 100644
--- a/LanguageExt.Tests/ResultTests.cs
+++ b/LanguageExt.Tests/ResultTests.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 
 using Xunit;
 
@@ -291,4 +292,4 @@ public void TestMapWithFaultWithNullException()
         private readonly Result<int> faultResult = new Result<int>(new InvalidOperationException());
         private readonly Result<int> faultWithNullException = new Result<int>((Exception) null);
     }
-}
\ No newline at end of file
+}
diff --git a/Samples/Records/Program.cs b/Samples/Records/Program.cs
index f74fbc2d1..f7cb7b5c0 100644
--- a/Samples/Records/Program.cs
+++ b/Samples/Records/Program.cs
@@ -1,4 +1,5 @@
 using System;
+using LanguageExt.Common;
 
 namespace Records
 {
diff --git a/Samples/TestBed/Program.cs b/Samples/TestBed/Program.cs
index 30556402d..53702c627 100644
--- a/Samples/TestBed/Program.cs
+++ b/Samples/TestBed/Program.cs
@@ -8,6 +8,7 @@
 using System.Linq;
 using System.Reflection;
 using LanguageExt;
+using LanguageExt.Common;
 using Newtonsoft.Json;
 using System.Runtime.Serialization;
 using static LanguageExt.Prelude;