diff --git a/samples/BindingTest/BindingTest.csproj b/samples/BindingTest/BindingTest.csproj
index 0ba9e86d67..88c61c613b 100644
--- a/samples/BindingTest/BindingTest.csproj
+++ b/samples/BindingTest/BindingTest.csproj
@@ -37,11 +37,11 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.dll</HintPath>
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.FullNetFx.dll</HintPath>
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.FullNetFx.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Splat, Version=1.6.2.0, Culture=neutral, processorArchitecture=MSIL">
diff --git a/samples/BindingTest/packages.config b/samples/BindingTest/packages.config
index 2bac0ad760..f106504112 100644
--- a/samples/BindingTest/packages.config
+++ b/samples/BindingTest/packages.config
@@ -5,6 +5,6 @@
   <package id="Rx-Linq" version="2.2.5" targetFramework="net46" />
   <package id="Rx-Main" version="2.2.5" targetFramework="net46" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net46" />
-  <package id="Serilog" version="1.5.9" targetFramework="net46" />
+  <package id="Serilog" version="1.5.14" targetFramework="net46" />
   <package id="Splat" version="1.6.2" targetFramework="net46" />
 </packages>
\ No newline at end of file
diff --git a/samples/ControlCatalog/ControlCatalog.csproj b/samples/ControlCatalog/ControlCatalog.csproj
index d3bf036619..ff3e6df64f 100644
--- a/samples/ControlCatalog/ControlCatalog.csproj
+++ b/samples/ControlCatalog/ControlCatalog.csproj
@@ -37,11 +37,11 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.dll</HintPath>
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.FullNetFx.dll</HintPath>
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.FullNetFx.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
diff --git a/samples/ControlCatalog/packages.config b/samples/ControlCatalog/packages.config
index 76c9b4d2a5..44ff0f0628 100644
--- a/samples/ControlCatalog/packages.config
+++ b/samples/ControlCatalog/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Serilog" version="1.5.9" targetFramework="net46" />
+  <package id="Serilog" version="1.5.14" targetFramework="net46" />
 </packages>
\ No newline at end of file
diff --git a/samples/TestApplication/TestApplication.csproj b/samples/TestApplication/TestApplication.csproj
index 86397361e1..d87ec3cd93 100644
--- a/samples/TestApplication/TestApplication.csproj
+++ b/samples/TestApplication/TestApplication.csproj
@@ -35,6 +35,14 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.FullNetFx.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Drawing" />
@@ -60,12 +68,6 @@
     <Reference Include="System.Reactive.PlatformServices">
       <HintPath>..\..\packages\Rx-PlatformServices.2.2.5\lib\net45\System.Reactive.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.dll</HintPath>
-    </Reference>
-    <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.FullNetFx.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Program.cs" />
diff --git a/samples/TestApplication/packages.config b/samples/TestApplication/packages.config
index 16c00246fc..ad590e7062 100644
--- a/samples/TestApplication/packages.config
+++ b/samples/TestApplication/packages.config
@@ -6,5 +6,5 @@
   <package id="Rx-Main" version="2.2.5" targetFramework="net45" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net45" />
   <package id="Rx-XAML" version="2.2.5" targetFramework="net45" />
-  <package id="Serilog" version="1.5.9" targetFramework="net45" />
+  <package id="Serilog" version="1.5.14" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/samples/XamlTestApplication/XamlTestApplication.csproj b/samples/XamlTestApplication/XamlTestApplication.csproj
index 14ab4adb26..94c56c07e2 100644
--- a/samples/XamlTestApplication/XamlTestApplication.csproj
+++ b/samples/XamlTestApplication/XamlTestApplication.csproj
@@ -36,10 +36,22 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\net45\Serilog.FullNetFx.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="Splat, Version=1.6.2.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Splat.1.6.2\lib\Net45\Splat.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Sprache, Version=2.0.0.50, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Sprache.2.0.0.50\lib\portable-net4+netcore45+win8+wp8+sl5+MonoAndroid+Xamarin.iOS10+MonoTouch\Sprache.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Drawing" />
@@ -53,15 +65,6 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
     <Reference Include="WindowsBase" />
-    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.dll</HintPath>
-    </Reference>
-    <Reference Include="Serilog.FullNetFx, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.FullNetFx.dll</HintPath>
-    </Reference>
-    <Reference Include="Sprache, Version=2.0.0.47, Culture=neutral, PublicKeyToken=null">
-      <HintPath>..\..\packages\Sprache.2.0.0.47\lib\portable-net4+netcore45+win8+wp8+sl5+MonoAndroid1+MonoTouch1\Sprache.dll</HintPath>
-    </Reference>
     <Reference Include="System.Reactive.Core, Version=2.2.5.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
       <HintPath>..\..\packages\Rx-Core.2.2.5\lib\net45\System.Reactive.Core.dll</HintPath>
     </Reference>
diff --git a/samples/XamlTestApplication/packages.config b/samples/XamlTestApplication/packages.config
index e4f85a244e..f90be0b808 100644
--- a/samples/XamlTestApplication/packages.config
+++ b/samples/XamlTestApplication/packages.config
@@ -6,7 +6,7 @@
   <package id="Rx-Main" version="2.2.5" targetFramework="net46" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net46" />
   <package id="Rx-XAML" version="2.2.5" targetFramework="net46" />
-  <package id="Serilog" version="1.5.9" targetFramework="net46" />
+  <package id="Serilog" version="1.5.14" targetFramework="net45" />
   <package id="Splat" version="1.6.2" targetFramework="net45" />
-  <package id="Sprache" version="2.0.0.47" targetFramework="net451" />
+  <package id="Sprache" version="2.0.0.50" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/Markup/Perspex.Markup.Xaml/Perspex.Markup.Xaml.csproj b/src/Markup/Perspex.Markup.Xaml/Perspex.Markup.Xaml.csproj
index a88e7e7d70..ea64071aa3 100644
--- a/src/Markup/Perspex.Markup.Xaml/Perspex.Markup.Xaml.csproj
+++ b/src/Markup/Perspex.Markup.Xaml/Perspex.Markup.Xaml.csproj
@@ -316,11 +316,13 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\..\packages\Serilog.1.5.9\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
+    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\Serilog.1.5.14\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
+      <Private>True</Private>
     </Reference>
-    <Reference Include="Sprache, Version=2.0.0.47, Culture=neutral, PublicKeyToken=null">
-      <HintPath>..\..\..\packages\Sprache.2.0.0.47\lib\portable-net4+netcore45+win8+wp8+sl5+MonoAndroid1+MonoTouch1\Sprache.dll</HintPath>
+    <Reference Include="Sprache, Version=2.0.0.50, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\Sprache.2.0.0.50\lib\portable-net4+netcore45+win8+wp8+sl5+MonoAndroid+Xamarin.iOS10+MonoTouch\Sprache.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System.Reactive.Core, Version=2.2.5.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
       <HintPath>..\..\..\packages\Rx-Core.2.2.5\lib\portable-windows8+net45+wp8\System.Reactive.Core.dll</HintPath>
diff --git a/src/Markup/Perspex.Markup.Xaml/packages.config b/src/Markup/Perspex.Markup.Xaml/packages.config
index 7576d65eac..f677561e8d 100644
--- a/src/Markup/Perspex.Markup.Xaml/packages.config
+++ b/src/Markup/Perspex.Markup.Xaml/packages.config
@@ -5,6 +5,6 @@
   <package id="Rx-Linq" version="2.2.5" targetFramework="portable46-net451+win81" />
   <package id="Rx-Main" version="2.2.5" targetFramework="portable46-net451+win81" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="portable46-net451+win81" />
-  <package id="Serilog" version="1.5.9" targetFramework="portable46-net451+win81" />
-  <package id="Sprache" version="2.0.0.47" targetFramework="portable45-net45+win8" />
+  <package id="Serilog" version="1.5.14" targetFramework="portable45-net45+win8" />
+  <package id="Sprache" version="2.0.0.50" targetFramework="portable45-net45+win8" />
 </packages>
\ No newline at end of file
diff --git a/src/Perspex.Base/Perspex.Base.csproj b/src/Perspex.Base/Perspex.Base.csproj
index e7d9b3d405..40a370e3c4 100644
--- a/src/Perspex.Base/Perspex.Base.csproj
+++ b/src/Perspex.Base/Perspex.Base.csproj
@@ -103,8 +103,12 @@
     <Compile Include="Utilities\WeakTimer.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="JetBrains.Annotations.PCL328, Version=9.2.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\JetBrains.Annotations.9.2.0\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\JetBrains.Annotations.PCL328.dll</HintPath>
+    <Reference Include="JetBrains.Annotations.PCL328, Version=10.0.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\JetBrains.Annotations.10.0.0\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\JetBrains.Annotations.PCL328.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Reactive.Core">
@@ -119,9 +123,6 @@
     <Reference Include="System.Reactive.PlatformServices">
       <HintPath>..\..\packages\Rx-PlatformServices.2.2.5\lib\portable-windows8+net45+wp8\System.Reactive.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
diff --git a/src/Perspex.Base/packages.config b/src/Perspex.Base/packages.config
index 26d3282b7a..8d964a1c8c 100644
--- a/src/Perspex.Base/packages.config
+++ b/src/Perspex.Base/packages.config
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="JetBrains.Annotations" version="9.2.0" targetFramework="portable45-net45+win8" />
+  <package id="JetBrains.Annotations" version="10.0.0" targetFramework="portable45-net45+win8" />
   <package id="Rx-Core" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Interfaces" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Linq" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Main" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="portable-net45+win8" />
-  <package id="Serilog" version="1.5.9" targetFramework="portable45-net45+win8" />
+  <package id="Serilog" version="1.5.14" targetFramework="portable45-net45+win8" />
 </packages>
\ No newline at end of file
diff --git a/src/Perspex.Controls/Perspex.Controls.csproj b/src/Perspex.Controls/Perspex.Controls.csproj
index 6532275a78..58aee7f2a5 100644
--- a/src/Perspex.Controls/Perspex.Controls.csproj
+++ b/src/Perspex.Controls/Perspex.Controls.csproj
@@ -192,8 +192,12 @@
     <Compile Include="WrapPanel.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="JetBrains.Annotations.PCL328, Version=9.2.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\JetBrains.Annotations.9.2.0\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\JetBrains.Annotations.PCL328.dll</HintPath>
+    <Reference Include="JetBrains.Annotations.PCL328, Version=10.0.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\JetBrains.Annotations.10.0.0\lib\portable-net4+sl5+netcore45+wpa81+wp8+MonoAndroid1+MonoTouch1\JetBrains.Annotations.PCL328.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Serilog.1.5.14\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Reactive.Core">
@@ -208,9 +212,6 @@
     <Reference Include="System.Reactive.PlatformServices">
       <HintPath>..\..\packages\Rx-PlatformServices.2.2.5\lib\portable-windows8+net45+wp8\System.Reactive.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Serilog, Version=1.5.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10">
-      <HintPath>..\..\packages\Serilog.1.5.9\lib\portable-net45+win+wpa81+wp80+MonoAndroid10+MonoTouch10\Serilog.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
diff --git a/src/Perspex.Controls/packages.config b/src/Perspex.Controls/packages.config
index 26d3282b7a..8d964a1c8c 100644
--- a/src/Perspex.Controls/packages.config
+++ b/src/Perspex.Controls/packages.config
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="JetBrains.Annotations" version="9.2.0" targetFramework="portable45-net45+win8" />
+  <package id="JetBrains.Annotations" version="10.0.0" targetFramework="portable45-net45+win8" />
   <package id="Rx-Core" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Interfaces" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Linq" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-Main" version="2.2.5" targetFramework="portable-net45+win8" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="portable-net45+win8" />
-  <package id="Serilog" version="1.5.9" targetFramework="portable45-net45+win8" />
+  <package id="Serilog" version="1.5.14" targetFramework="portable45-net45+win8" />
 </packages>
\ No newline at end of file
diff --git a/src/Perspex.HtmlRenderer/Perspex.HtmlRenderer.csproj b/src/Perspex.HtmlRenderer/Perspex.HtmlRenderer.csproj
index 7167ab0a7f..63df636b52 100644
--- a/src/Perspex.HtmlRenderer/Perspex.HtmlRenderer.csproj
+++ b/src/Perspex.HtmlRenderer/Perspex.HtmlRenderer.csproj
@@ -15,6 +15,8 @@
     <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <TargetFrameworkProfile>Profile7</TargetFrameworkProfile>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -180,10 +182,12 @@
     </Reference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
-  <Import Project="..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
-    <Error Condition="!Exists('..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
-    <Error Condition="Exists('..\..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
+  <Import Project="..\..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
   </Target>
   <!-- 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/Perspex.HtmlRenderer/packages.config b/src/Perspex.HtmlRenderer/packages.config
index f23358716a..e27b3bc279 100644
--- a/src/Perspex.HtmlRenderer/packages.config
+++ b/src/Perspex.HtmlRenderer/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="portable45-net45+win8" />
-  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="portable45-net45+win8" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="portable45-net45+win8" />
   <package id="Rx-Core" version="2.2.5" targetFramework="portable45-net45+win8" />
   <package id="Rx-Interfaces" version="2.2.5" targetFramework="portable45-net45+win8" />
 </packages>
\ No newline at end of file
diff --git a/src/Perspex.Layout/Perspex.Layout.csproj b/src/Perspex.Layout/Perspex.Layout.csproj
index f8299b9173..e6614107aa 100644
--- a/src/Perspex.Layout/Perspex.Layout.csproj
+++ b/src/Perspex.Layout/Perspex.Layout.csproj
@@ -67,6 +67,10 @@
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+      <Private>True</Private>
+    </Reference>
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@@ -79,9 +83,6 @@
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diff --git a/src/Perspex.Layout/packages.config b/src/Perspex.Layout/packages.config
index 7d2a813bf7..c1c997f8a7 100644
--- a/src/Perspex.Layout/packages.config
+++ b/src/Perspex.Layout/packages.config
@@ -5,5 +5,5 @@
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-  <package id="Serilog" version="1.5.9" targetFramework="portable45-net45+win8" />
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 </packages>
\ No newline at end of file
diff --git a/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj b/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
index d31998b80a..9f6aa6216e 100644
--- a/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
+++ b/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
@@ -137,6 +137,10 @@
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   </ItemGroup>
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+      <Private>True</Private>
+    </Reference>
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@@ -149,9 +153,6 @@
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diff --git a/src/Perspex.SceneGraph/packages.config b/src/Perspex.SceneGraph/packages.config
index 7d2a813bf7..c1c997f8a7 100644
--- a/src/Perspex.SceneGraph/packages.config
+++ b/src/Perspex.SceneGraph/packages.config
@@ -5,5 +5,5 @@
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   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="portable-net45+win8" />
-  <package id="Serilog" version="1.5.9" targetFramework="portable45-net45+win8" />
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 </packages>
\ No newline at end of file
diff --git a/src/Windows/Perspex.Designer/Perspex.Designer.csproj b/src/Windows/Perspex.Designer/Perspex.Designer.csproj
index 42131b06fd..d90a0a55cb 100644
--- a/src/Windows/Perspex.Designer/Perspex.Designer.csproj
+++ b/src/Windows/Perspex.Designer/Perspex.Designer.csproj
@@ -46,8 +46,8 @@
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-      <HintPath>..\..\..\packages\JetBrains.Annotations.9.2.0\lib\net20\JetBrains.Annotations.dll</HintPath>
+    <Reference Include="JetBrains.Annotations, Version=10.0.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\JetBrains.Annotations.10.0.0\lib\net20\JetBrains.Annotations.dll</HintPath>
       <Private>True</Private>
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diff --git a/src/Windows/Perspex.Designer/packages.config b/src/Windows/Perspex.Designer/packages.config
index 5796357235..b0ac21bcd8 100644
--- a/src/Windows/Perspex.Designer/packages.config
+++ b/src/Windows/Perspex.Designer/packages.config
@@ -1,4 +1,4 @@
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 <packages>
-  <package id="JetBrains.Annotations" version="9.2.0" targetFramework="net45" />
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\ No newline at end of file
diff --git a/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj b/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
index 219e54a3ba..c091a58c34 100644
--- a/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
+++ b/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
@@ -36,16 +36,16 @@
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-      <HintPath>..\..\..\packages\SharpDX.3.0.0\lib\net45\SharpDX.dll</HintPath>
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-      <HintPath>..\..\..\packages\SharpDX.Direct2D1.3.0.0\lib\net45\SharpDX.Direct2D1.dll</HintPath>
+    <Reference Include="SharpDX.Direct2D1, Version=3.0.1.0, Culture=neutral, PublicKeyToken=b4dcf0f35e5521f1, processorArchitecture=MSIL">
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-      <HintPath>..\..\..\packages\SharpDX.DXGI.3.0.0\lib\net45\SharpDX.DXGI.dll</HintPath>
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index 4785718a84..b5795e1753 100644
--- a/src/Windows/Perspex.Direct2D1/packages.config
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@@ -3,7 +3,7 @@
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-  <package id="SharpDX.Direct2D1" version="3.0.0" targetFramework="net45" />
-  <package id="SharpDX.DXGI" version="3.0.0" targetFramework="net45" />
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 </packages>
\ No newline at end of file
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index 4e0bc991f5..35b5681cd1 100644
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+    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
   </ItemGroup>
   <Choose>
     <When Condition="('$(VisualStudioVersion)' == '10.0' or '$(VisualStudioVersion)' == '') and '$(TargetFrameworkVersion)' == 'v3.5'">
@@ -166,10 +172,9 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\xunit.core.2.0.0\build\portable-net45+win+wpa81+wp80+monotouch+monoandroid+Xamarin.iOS\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.0.0\build\portable-net45+win+wpa81+wp80+monotouch+monoandroid+Xamarin.iOS\xunit.core.props'))" />
-    <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.0.1\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.0.1\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
   </Target>
   <!-- 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/tests/Perspex.Styling.UnitTests/packages.config b/tests/Perspex.Styling.UnitTests/packages.config
index bacf5a37aa..c5e3427b0d 100644
--- a/tests/Perspex.Styling.UnitTests/packages.config
+++ b/tests/Perspex.Styling.UnitTests/packages.config
@@ -1,16 +1,17 @@
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 <packages>
-  <package id="Moq" version="4.2.1507.0118" targetFramework="net45" />
+  <package id="Moq" version="4.2.1510.2205" targetFramework="net45" />
   <package id="Rx-Core" version="2.2.5" targetFramework="net45" />
   <package id="Rx-Interfaces" version="2.2.5" targetFramework="net45" />
   <package id="Rx-Linq" version="2.2.5" targetFramework="net45" />
   <package id="Rx-Main" version="2.2.5" targetFramework="net45" />
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net45" />
   <package id="Rx-Testing" version="2.2.5" targetFramework="net45" />
-  <package id="xunit" version="2.0.0" targetFramework="net45" />
+  <package id="xunit" version="2.1.0" targetFramework="net45" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="net45" />
-  <package id="xunit.assert" version="2.0.0" targetFramework="net45" />
-  <package id="xunit.core" version="2.0.0" targetFramework="net45" />
-  <package id="xunit.extensibility.core" version="2.0.0" targetFramework="net45" />
-  <package id="xunit.runner.visualstudio" version="2.0.1" targetFramework="net45" />
+  <package id="xunit.assert" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.core" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net45" />
 </packages>
\ No newline at end of file