diff --git a/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nupkg b/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nupkg
new file mode 100644
index 00000000..0f865f10
Binary files /dev/null and b/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nupkg differ
diff --git a/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nuspec b/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nuspec
new file mode 100644
index 00000000..0964d434
--- /dev/null
+++ b/packages/FsUnit.1.2.1.0/FsUnit.1.2.1.0.nuspec
@@ -0,0 +1,22 @@
+<?xml version="1.0"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
+  <metadata>
+    <id>FsUnit</id>
+    <version>1.2.1.0</version>
+    <title>FsUnit</title>
+    <authors>Ray Vernagus and Daniel Mohl</authors>
+    <owners>Ray Vernagus and Daniel Mohl</owners>
+    <licenseUrl>http://fsunit.codeplex.com/license</licenseUrl>
+    <projectUrl>http://fsunit.codeplex.com/</projectUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <description>FsUnit is a set of extensions that add special testing syntax to NUnit.</description>
+    <summary>The goals of FsUnit are to make unit-testing feel more functional while leverage existing testing frameworks.</summary>
+    <releaseNotes />
+    <copyright />
+    <language>en-US</language>
+    <tags>F# fsharp NUnit FsUnit</tags>
+    <dependencies>
+      <dependency id="NUnit" version="2.6.2" />
+    </dependencies>
+  </metadata>
+</package>
\ No newline at end of file
diff --git a/packages/FsUnit.1.2.1.0/Lib/Net20/FsUnit.NUnit.dll b/packages/FsUnit.1.2.1.0/Lib/Net20/FsUnit.NUnit.dll
new file mode 100644
index 00000000..fde33568
Binary files /dev/null and b/packages/FsUnit.1.2.1.0/Lib/Net20/FsUnit.NUnit.dll differ
diff --git a/packages/FsUnit.1.2.1.0/Lib/Net40/FsUnit.NUnit.dll b/packages/FsUnit.1.2.1.0/Lib/Net40/FsUnit.NUnit.dll
new file mode 100644
index 00000000..e070467b
Binary files /dev/null and b/packages/FsUnit.1.2.1.0/Lib/Net40/FsUnit.NUnit.dll differ
diff --git a/packages/FsUnit.1.2.1.0/tools/install.ps1 b/packages/FsUnit.1.2.1.0/tools/install.ps1
new file mode 100644
index 00000000..faaa23e0
--- /dev/null
+++ b/packages/FsUnit.1.2.1.0/tools/install.ps1
@@ -0,0 +1,3 @@
+param($rootPath, $toolsPath, $package, $project)
+
+Add-BindingRedirect $project.Name
\ No newline at end of file
diff --git a/src/FSharpPortableUnitTests/App.config b/src/FSharpPortableUnitTests/App.config
index 10beb7c0..d89f1d5b 100644
--- a/src/FSharpPortableUnitTests/App.config
+++ b/src/FSharpPortableUnitTests/App.config
@@ -1,11 +1,13 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
-	<runtime>
-		<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-			<dependentAssembly>
-				<assemblyIdentity name="FSharp.Core" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-				<bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
-			</dependentAssembly>
-		</assemblyBinding>
-	</runtime>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="FSharp.Core" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"  />
+        <bindingRedirect oldVersion="4.0.0.0" newVersion="4.3.0.0" />
+        <bindingRedirect oldVersion="2.3.5.0" newVersion="4.3.0.0" />
+        <bindingRedirect oldVersion="2.0.0.0" newVersion="4.3.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
 </configuration>
diff --git a/src/FSharpPortableUnitTests/FSharpPortableUnitTests.fsproj b/src/FSharpPortableUnitTests/FSharpPortableUnitTests.fsproj
index f106b5d3..13dae474 100644
--- a/src/FSharpPortableUnitTests/FSharpPortableUnitTests.fsproj
+++ b/src/FSharpPortableUnitTests/FSharpPortableUnitTests.fsproj
@@ -39,6 +39,10 @@
   <Import Project="$(MSBuildExtensionsPath32)\..\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets" Condition=" Exists('$(MSBuildExtensionsPath32)\..\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets')" />
   <ItemGroup>
     <Reference Include="FSharp.Core" />
+    <Reference Include="FsUnit.NUnit">
+      <HintPath>..\..\packages\FsUnit.1.2.1.0\Lib\Net40\FsUnit.NUnit.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="mscorlib" />
     <Reference Include="nunit.framework, Version=2.6.2.12296, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77">
       <HintPath>..\..\packages\NUnit.2.6.2\lib\nunit.framework.dll</HintPath>
@@ -58,9 +62,6 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="..\FSharpUnitTests\FsUnit.fs">
-      <Link>FsUnit.fs</Link>
-    </Compile>
     <Compile Include="..\FSharpUnitTests\VectorTests.fs">
       <Link>VectorTests.fs</Link>
     </Compile>
diff --git a/src/FSharpPortableUnitTests/packages.config b/src/FSharpPortableUnitTests/packages.config
index 62adf5a5..61d00378 100644
--- a/src/FSharpPortableUnitTests/packages.config
+++ b/src/FSharpPortableUnitTests/packages.config
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="FsUnit" version="1.2.1.0" targetFramework="net45" />
   <package id="NUnit" version="2.6.2" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/FSharpUnitTests/App.config b/src/FSharpUnitTests/App.config
new file mode 100644
index 00000000..d89f1d5b
--- /dev/null
+++ b/src/FSharpUnitTests/App.config
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="FSharp.Core" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"  />
+        <bindingRedirect oldVersion="4.0.0.0" newVersion="4.3.0.0" />
+        <bindingRedirect oldVersion="2.3.5.0" newVersion="4.3.0.0" />
+        <bindingRedirect oldVersion="2.0.0.0" newVersion="4.3.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
diff --git a/src/FSharpUnitTests/FSharpUnitTests.fsproj b/src/FSharpUnitTests/FSharpUnitTests.fsproj
index b10a7f7b..776885af 100644
--- a/src/FSharpUnitTests/FSharpUnitTests.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests.fsproj
@@ -46,6 +46,10 @@
   <Import Project="$(MSBuildExtensionsPath32)\FSharp\1.0\Microsoft.FSharp.Targets" Condition="(!Exists('$(MSBuildExtensionsPath32)\..\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets')) And (!Exists('$(MSBuildExtensionsPath32)\..\Microsoft F#\v4.0\Microsoft.FSharp.Targets')) And (Exists('$(MSBuildExtensionsPath32)\FSharp\1.0\Microsoft.FSharp.Targets'))" />
   <ItemGroup>
     <Reference Include="FSharp.Core" />
+    <Reference Include="FsUnit.NUnit">
+      <HintPath>..\..\packages\FsUnit.1.2.1.0\Lib\Net40\FsUnit.NUnit.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="mscorlib" />
     <Reference Include="nunit.framework, Version=2.6.2.12296, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77">
       <HintPath>..\..\packages\NUnit.2.6.2\lib\nunit.framework.dll</HintPath>
@@ -65,7 +69,6 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="FsUnit.fs" />
     <Compile Include="VectorTests.fs" />
     <Compile Include="SparseVectorTests.fs" />
     <Compile Include="DenseVectorTests.fs" />
@@ -78,6 +81,7 @@
     <Compile Include="PokerTests.fs" />
     <Compile Include="CurveFittingTests.fs" />
     <None Include="packages.config" />
+    <None Include="App.config" />
   </ItemGroup>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
 	     Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/src/FSharpUnitTests/FsUnit.fs b/src/FSharpUnitTests/FsUnit.fs
deleted file mode 100644
index a0a37243..00000000
--- a/src/FSharpUnitTests/FsUnit.fs
+++ /dev/null
@@ -1,70 +0,0 @@
-module FsUnit
-open NUnit.Framework
-open NUnit.Framework.Constraints
-
-let should (f : 'a -> #Constraint) x (y : obj) =
-    let c = f x
-    let y =
-        match y with
-        | :? (unit -> unit) -> box (TestDelegate(y :?> unit -> unit))
-        | _ -> y
-    Assert.That(y, c)
-
-let equal x = EqualConstraint(x)
-
-let equalWithin tolerance x = equal(x).Within tolerance
-
-let contain x = ContainsConstraint(x)
-
-let haveLength n = Has.Length.EqualTo(n)
-
-let haveCount n = Has.Count.EqualTo(n)
-
-let be = id
-
-let Null = NullConstraint()
-
-let Empty = EmptyConstraint()
-
-let EmptyString = EmptyStringConstraint()
-
-let NullOrEmptyString = NullOrEmptyStringConstraint()
-
-let True = TrueConstraint()
-
-let False = FalseConstraint()
-
-let sameAs x = SameAsConstraint(x)
-
-let throw = Throws.TypeOf
-
-let greaterThan x = GreaterThanConstraint(x)
-
-let greaterThanOrEqualTo x = GreaterThanOrEqualConstraint(x)
-
-let lessThan x = LessThanConstraint(x)
-
-let lessThanOrEqualTo x = LessThanOrEqualConstraint(x)
-
-let shouldFail (f : unit -> unit) =
-    TestDelegate(f) |> should throw typeof<AssertionException>
-
-let endWith (s:string) = EndsWithConstraint s
-
-let startWith (s:string) = StartsWithConstraint s
-
-let ofExactType<'a> = ExactTypeConstraint(typeof<'a>)
-
-let instanceOfType<'a> = InstanceOfTypeConstraint(typeof<'a>)
-
-let NaN = NaNConstraint()
-
-let unique = UniqueItemsConstraint()
-
-let not' x = NotConstraint(x)
-
-let array_equal = equal
-let array2_equal = equal
-let approximately_equal tolerance = equalWithin (10.0 ** (float -tolerance))
-let approximately_vector_equal = approximately_equal
-let approximately_matrix_equal = approximately_equal
diff --git a/src/FSharpUnitTests/MatrixTests.fs b/src/FSharpUnitTests/MatrixTests.fs
index 3a0c8c72..26e95558 100644
--- a/src/FSharpUnitTests/MatrixTests.fs
+++ b/src/FSharpUnitTests/MatrixTests.fs
@@ -8,6 +8,8 @@ open MathNet.Numerics.LinearAlgebra.Double
 /// Unit tests for the matrix type.
 module MatrixTests =
 
+    let approximately_equal tolerance = equalWithin (10.0 ** (float -tolerance))
+
     /// A small uniform vector.
     let smallM = DenseMatrix.OfArray( Array2D.create 2 2 0.3 )
     let failingFoldBackM = DenseMatrix.init 2 3 (fun i j -> 1.0)
@@ -46,7 +48,7 @@ module MatrixTests =
 
     [<Test>]
     let ``Matrix.toArray2`` () =
-        Matrix.toArray2 smallM |> should array2_equal (Array2D.create 2 2 0.3)
+        Matrix.toArray2 smallM |> should equal (Array2D.create 2 2 0.3)
 
     [<Test>]
     let ``Matrix.mapInPlace.Dense`` () =
@@ -102,11 +104,11 @@ module MatrixTests =
 
     [<Test>]
     let ``Matrix.mapCols`` () =
-        Matrix.mapCols (fun j col -> col.Add(float j)) smallM |> should (approximately_matrix_equal 14) (matrix [[0.3;1.3];[0.3;1.3]])
+        Matrix.mapCols (fun j col -> col.Add(float j)) smallM |> should (approximately_equal 14) (matrix [[0.3;1.3];[0.3;1.3]])
 
     [<Test>]
     let ``Matrix.mapRows`` () =
-        Matrix.mapRows (fun i row -> row.Add(float i)) smallM |> should (approximately_matrix_equal 14) (matrix [[0.3;0.3];[1.3;1.3]])
+        Matrix.mapRows (fun i row -> row.Add(float i)) smallM |> should (approximately_equal 14) (matrix [[0.3;0.3];[1.3;1.3]])
 
     [<Test>]
     let ``Matrix.fold`` () =
diff --git a/src/FSharpUnitTests/VectorTests.fs b/src/FSharpUnitTests/VectorTests.fs
index b4c50c0a..d5f9187e 100644
--- a/src/FSharpUnitTests/VectorTests.fs
+++ b/src/FSharpUnitTests/VectorTests.fs
@@ -8,6 +8,8 @@ open MathNet.Numerics.LinearAlgebra.Double
 /// Unit tests for the vector type.
 module VectorTests =
 
+    let approximately_equal tolerance = equalWithin (10.0 ** (float -tolerance))
+
     /// A small uniform vector.
     let smallv = DenseVector([|0.3;0.3;0.3;0.3;0.3|])
 
@@ -45,7 +47,7 @@ module VectorTests =
 
     [<Test>]
     let ``Vector.toArray`` () =
-        Vector.toArray smallv |> should array_equal [|0.3;0.3;0.3;0.3;0.3|]
+        Vector.toArray smallv |> should equal [|0.3;0.3;0.3;0.3;0.3|]
 
     [<Test>]
     let ``Vector.toList`` () =
@@ -145,11 +147,11 @@ module VectorTests =
 
     [<Test>]
     let ``Vector.scan`` () =
-        Vector.scan (fun acc x -> acc + x) smallv |> should (approximately_vector_equal 14) (new DenseVector( [|0.3;0.6;0.9;1.2;1.5|] ) :> Vector<float>)
+        Vector.scan (fun acc x -> acc + x) smallv |> should (approximately_equal 14) (new DenseVector( [|0.3;0.6;0.9;1.2;1.5|] ) :> Vector<float>)
 
     [<Test>]
     let ``Vector.scanBack`` () =
-        Vector.scanBack (fun x acc -> acc + x) smallv |> should (approximately_vector_equal 14) (new DenseVector( [|1.5;1.2;0.9;0.6;0.3|] ) :> Vector<float>)
+        Vector.scanBack (fun x acc -> acc + x) smallv |> should (approximately_equal 14) (new DenseVector( [|1.5;1.2;0.9;0.6;0.3|] ) :> Vector<float>)
 
     [<Test>]
     let ``Vector.reduce`` () =
@@ -161,4 +163,4 @@ module VectorTests =
 
     [<Test>]
     let ``Vector.insert`` () =
-        Vector.insert 2 0.5 smallv |> should (approximately_vector_equal 14) (new DenseVector ( [|0.3;0.3;0.5;0.3;0.3;0.3|] ) :> Vector<float>)
+        Vector.insert 2 0.5 smallv |> should (approximately_equal 14) (new DenseVector ( [|0.3;0.3;0.5;0.3;0.3;0.3|] ) :> Vector<float>)
diff --git a/src/FSharpUnitTests/packages.config b/src/FSharpUnitTests/packages.config
index 5c3ca54d..6f50ba2e 100644
--- a/src/FSharpUnitTests/packages.config
+++ b/src/FSharpUnitTests/packages.config
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="FsUnit" version="1.2.1.0" targetFramework="net40" />
   <package id="NUnit" version="2.6.2" targetFramework="net40" />
 </packages>
\ No newline at end of file