diff --git a/paket.dependencies b/paket.dependencies
index 4382fbb3..4c66a7cc 100644
--- a/paket.dependencies
+++ b/paket.dependencies
@@ -6,7 +6,7 @@ group Test
     source http://www.nuget.org/api/v2
     nuget FSharp.Core
     nuget NUnit ~> 2.6
-    nuget FsUnit ~> 1.3
+    nuget FsUnit ~> 1.3.1
 
 group Build
     source http://www.nuget.org/api/v2
diff --git a/paket.lock b/paket.lock
index ee5bc2d0..ec4d7660 100644
--- a/paket.lock
+++ b/paket.lock
@@ -36,7 +36,6 @@ NUGET
   remote: http://www.nuget.org/api/v2
   specs:
     FSharp.Core (4.0.0.1)
-    FsUnit (1.4.1)
-      FSharp.Core (>= 3.1.2.5)
+    FsUnit (1.3.1)
       NUnit (2.6.4)
     NUnit (2.6.4)
diff --git a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
index 2f8a6db0..1f5b4f30 100644
--- a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
@@ -6,8 +6,6 @@
     <RootNamespace>FSharpUnitTests</RootNamespace>
     <OutputType>Library</OutputType>
     <ProjectGuid>{8c96f2e9-681b-4201-8bdd-0aa901203725}</ProjectGuid>
-    <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{F2A71F9B-5D33-465A-A702-920D77279786}</ProjectTypeGuids>
-    <TestProjectType>UnitTest</TestProjectType>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
@@ -171,22 +169,18 @@
       </ItemGroup>
     </When>
   </Choose>
-  <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.5' Or $(TargetFrameworkVersion) == 'v4.5.1' Or $(TargetFrameworkVersion) == 'v4.5.2' Or $(TargetFrameworkVersion) == 'v4.5.3' Or $(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1')">
-      <ItemGroup>
-        <Reference Include="FsUnit.NUnit">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\FsUnit.NUnit.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-        <Reference Include="NHamcrest">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\NHamcrest.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
-  </Choose>
+  <ItemGroup>
+    <Reference Include="FsUnit.CustomMatchers">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.CustomMatchers.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+    <Reference Include="FsUnit.NUnit">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.NUnit.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+  </ItemGroup>
   <ItemGroup>
     <Reference Include="nunit.framework">
       <HintPath>..\..\packages\test\NUnit\lib\nunit.framework.dll</HintPath>
diff --git a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj.paket.references b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj.paket.references
index 6b8e7606..d2c47ee0 100644
--- a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj.paket.references
+++ b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj.paket.references
@@ -2,3 +2,4 @@ TaskParallelLibrary
 
 group Test
     FsUnit
+    FSharp.Core
diff --git a/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj b/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
index 8cb2ada4..c7b0dd11 100644
--- a/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
@@ -151,22 +151,18 @@
       </ItemGroup>
     </When>
   </Choose>
-  <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.5' Or $(TargetFrameworkVersion) == 'v4.5.1' Or $(TargetFrameworkVersion) == 'v4.5.2' Or $(TargetFrameworkVersion) == 'v4.5.3' Or $(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1')">
-      <ItemGroup>
-        <Reference Include="FsUnit.NUnit">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\FsUnit.NUnit.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-        <Reference Include="NHamcrest">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\NHamcrest.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
-  </Choose>
+  <ItemGroup>
+    <Reference Include="FsUnit.CustomMatchers">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.CustomMatchers.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+    <Reference Include="FsUnit.NUnit">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.NUnit.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+  </ItemGroup>
   <ItemGroup>
     <Reference Include="nunit.framework">
       <HintPath>..\..\packages\test\NUnit\lib\nunit.framework.dll</HintPath>
diff --git a/src/FSharpUnitTests/FSharpUnitTests.fsproj b/src/FSharpUnitTests/FSharpUnitTests.fsproj
index 44a73c03..776c552a 100644
--- a/src/FSharpUnitTests/FSharpUnitTests.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests.fsproj
@@ -160,22 +160,18 @@
       </ItemGroup>
     </When>
   </Choose>
-  <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.5' Or $(TargetFrameworkVersion) == 'v4.5.1' Or $(TargetFrameworkVersion) == 'v4.5.2' Or $(TargetFrameworkVersion) == 'v4.5.3' Or $(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1')">
-      <ItemGroup>
-        <Reference Include="FsUnit.NUnit">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\FsUnit.NUnit.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-        <Reference Include="NHamcrest">
-          <HintPath>..\..\packages\test\FsUnit\lib\net45\NHamcrest.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
-  </Choose>
+  <ItemGroup>
+    <Reference Include="FsUnit.CustomMatchers">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.CustomMatchers.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+    <Reference Include="FsUnit.NUnit">
+      <HintPath>..\..\packages\test\FsUnit\lib\FsUnit.NUnit.dll</HintPath>
+      <Private>True</Private>
+      <Paket>True</Paket>
+    </Reference>
+  </ItemGroup>
   <ItemGroup>
     <Reference Include="nunit.framework">
       <HintPath>..\..\packages\test\NUnit\lib\nunit.framework.dll</HintPath>
diff --git a/src/UnitTests/UnitTests-Net35.csproj b/src/UnitTests/UnitTests-Net35.csproj
index 754caac3..7e2b046b 100644
--- a/src/UnitTests/UnitTests-Net35.csproj
+++ b/src/UnitTests/UnitTests-Net35.csproj
@@ -5,8 +5,6 @@
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{9014A0CE-725D-4718-918C-923C0CA19FEE}</ProjectGuid>
-    <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
-    <TestProjectType>UnitTest</TestProjectType>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>MathNet.Numerics.UnitTests</RootNamespace>