diff --git a/source/nanoFramework.Json/Json.nanoFramework.nuspec b/nuspec/Json.nanoFramework.nuspec
similarity index 93%
rename from source/nanoFramework.Json/Json.nanoFramework.nuspec
rename to nuspec/Json.nanoFramework.nuspec
index 39f66a4..d10ac34 100644
--- a/source/nanoFramework.Json/Json.nanoFramework.nuspec
+++ b/nuspec/Json.nanoFramework.nuspec
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<package >
+<package>
   <metadata>
     <id>nanoFramework.Json</id>
     <title>JSON Serializer and Deserializer library for the .NET nanoFramework</title>
@@ -18,8 +18,8 @@
     <summary>JSON Serializer and Deserializer library for the .NET nanoFramework</summary>
     <tags>netmf nf nanoframework json</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.6.0-preview.1" />
-      <dependency id="nanoFramework.System.Collections" version="1.0.0-preview.7" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.7.0-preview.2" />
+      <dependency id="nanoFramework.System.Collections" version="1.0.0-preview.10" />
       <dependency id="nanoFramework.System.Text" version="1.0.0-preview.1" />
     </dependencies>
   </metadata>
@@ -30,4 +30,4 @@
     <file src="bin\Release\nanoFramework.Json\nanoFramework.Json.pe" target="lib\nanoFramework.Json.pe" />
     <file src="bin\Release\nanoFramework.Json\nanoFramework.Json.xml" target="lib\nanoFramework.Json.xml" />
   </files>
-</package>
+</package>
\ No newline at end of file
diff --git a/source/Test/nanoFramework/Test.nfproj b/source/Test/nanoFramework/Test.nfproj
index a441f5f..1791012 100644
--- a/source/Test/nanoFramework/Test.nfproj
+++ b/source/Test/nanoFramework/Test.nfproj
@@ -28,12 +28,12 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.6.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.6.0-preview.1\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.7.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.7.0-preview.2\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Collections.1.0.0-preview.7\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Collections.1.0.0-preview.10\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
diff --git a/source/Test/nanoFramework/packages.config b/source/Test/nanoFramework/packages.config
index 1f72605..33ada54 100644
--- a/source/Test/nanoFramework/packages.config
+++ b/source/Test/nanoFramework/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.6.0-preview.1" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.0.0-preview.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.7.0-preview.2" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.0.0-preview.10" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.0.0-preview.1" targetFramework="netnanoframework10" />
 </packages>
\ No newline at end of file
diff --git a/source/nanoFramework.Json/nanoFramework.Json.nfproj b/source/nanoFramework.Json/nanoFramework.Json.nfproj
index ba157f4..d599947 100644
--- a/source/nanoFramework.Json/nanoFramework.Json.nfproj
+++ b/source/nanoFramework.Json/nanoFramework.Json.nfproj
@@ -56,12 +56,12 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.6.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.6.0-preview.1\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.7.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.7.0-preview.2\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.0.0-preview.7\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.1.0.0-preview.10\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
diff --git a/source/nanoFramework.Json/packages.config b/source/nanoFramework.Json/packages.config
index 091d2a6..aa7730a 100644
--- a/source/nanoFramework.Json/packages.config
+++ b/source/nanoFramework.Json/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.6.0-preview.1" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.0.0-preview.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.7.0-preview.2" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.0.0-preview.10" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.0.0-preview.1" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.1.13-beta" targetFramework="netnanoframework10" developmentDependency="true" />
 </packages>
\ No newline at end of file