diff --git a/source/nanoFramework.System.Math.DELIVERABLES.nuspec b/source/nanoFramework.System.Math.DELIVERABLES.nuspec
index e0facd5..7126c8b 100644
--- a/source/nanoFramework.System.Math.DELIVERABLES.nuspec
+++ b/source/nanoFramework.System.Math.DELIVERABLES.nuspec
@@ -18,7 +18,7 @@
     <tags>
     </tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="[1.2.1-preview-001]" />
+      <dependency id="nanoFramework.CoreLibrary" version="[1.2.2-preview.20]" />
     </dependencies>
   </metadata>
   <files>
diff --git a/source/nanoFramework.System.Math.nuspec b/source/nanoFramework.System.Math.nuspec
index e17f4c6..605416e 100644
--- a/source/nanoFramework.System.Math.nuspec
+++ b/source/nanoFramework.System.Math.nuspec
@@ -17,7 +17,7 @@
     <summary>nanoFramework.System.Math assembly for nanoFramework C# projects</summary>
     <tags>nanoFramework C# csharp netmf netnf nanoFramework.System.Math</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="[1.2.1-preview-001]" />
+      <dependency id="nanoFramework.CoreLibrary" version="[1.2.2-preview.20]" />
     </dependencies>
   </metadata>
   <files>
diff --git a/source/nanoFramework.System.Math/nanoFramework.System.Math.nfproj b/source/nanoFramework.System.Math/nanoFramework.System.Math.nfproj
index 7112dcb..80718a4 100644
--- a/source/nanoFramework.System.Math/nanoFramework.System.Math.nfproj
+++ b/source/nanoFramework.System.Math/nanoFramework.System.Math.nfproj
@@ -45,7 +45,7 @@
     <Name>nanoFramework.System.Math</Name>
   </PropertyGroup>
   <ItemGroup>
-    <NFMDP_PE_LoadHints Include="..\packages\nanoFramework.CoreLibrary.1.2.1-preview-001\lib\mscorlib.dll">
+    <NFMDP_PE_LoadHints Include="..\packages\nanoFramework.CoreLibrary.1.2.2-preview.20\lib\mscorlib.dll">
       <InProject>false</InProject>
     </NFMDP_PE_LoadHints>
   </ItemGroup>
@@ -59,8 +59,8 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.2.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.2.1-preview-001\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.2.2.20, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.2.2-preview.20\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -70,11 +70,11 @@
       <ProjectConfigurationsDeclaredAsItems />
     </ProjectCapabilities>
   </ProjectExtensions>
-  <Import Project="..\packages\Nerdbank.GitVersioning.3.0.6-beta\build\Nerdbank.GitVersioning.targets" Condition="Exists('..\packages\Nerdbank.GitVersioning.3.0.6-beta\build\Nerdbank.GitVersioning.targets')" />
+  <Import Project="..\packages\Nerdbank.GitVersioning.2.3.179\build\Nerdbank.GitVersioning.targets" Condition="Exists('..\packages\Nerdbank.GitVersioning.2.3.179\build\Nerdbank.GitVersioning.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>
     </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Nerdbank.GitVersioning.3.0.6-beta\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Nerdbank.GitVersioning.3.0.6-beta\build\Nerdbank.GitVersioning.targets'))" />
+    <Error Condition="!Exists('..\packages\Nerdbank.GitVersioning.2.3.179\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Nerdbank.GitVersioning.2.3.179\build\Nerdbank.GitVersioning.targets'))" />
   </Target>
 </Project>
diff --git a/source/nanoFramework.System.Math/packages.config b/source/nanoFramework.System.Math/packages.config
index 4ff2609..a397354 100644
--- a/source/nanoFramework.System.Math/packages.config
+++ b/source/nanoFramework.System.Math/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.2.1-preview-001" targetFramework="netnanoframework10" />
-  <package id="Nerdbank.GitVersioning" version="3.0.6-beta" developmentDependency="true" targetFramework="netnanoframework10" />
-</packages>
\ No newline at end of file
+  <package id="nanoFramework.CoreLibrary" version="1.2.2-preview.20" targetFramework="netnanoframework10" />
+  <package id="Nerdbank.GitVersioning" version="2.3.179" developmentDependency="true" targetFramework="netnanoframework10" />
+</packages>