diff --git a/Tests/System.Threading.CancellationToken/System.Threading.CancellationToken.nfproj b/Tests/System.Threading.CancellationToken/System.Threading.CancellationToken.nfproj
index 10e2863..f42b7b7 100644
--- a/Tests/System.Threading.CancellationToken/System.Threading.CancellationToken.nfproj
+++ b/Tests/System.Threading.CancellationToken/System.Threading.CancellationToken.nfproj
@@ -30,8 +30,8 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.29\lib\netnano1.0\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.30\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework">
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.45\lib\nanoFramework.TestFramework.dll</HintPath>
@@ -56,4 +56,4 @@
       <ProjectConfigurationsDeclaredAsItems />
     </ProjectCapabilities>
   </ProjectExtensions>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/Tests/System.Threading.CancellationToken/packages.config b/Tests/System.Threading.CancellationToken/packages.config
index 43ab952..1f1664e 100644
--- a/Tests/System.Threading.CancellationToken/packages.config
+++ b/Tests/System.Threading.CancellationToken/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.45" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/System.Threading.CancellationToken/packages.lock.json b/Tests/System.Threading.CancellationToken/packages.lock.json
index 1fe5e62..244e70c 100644
--- a/Tests/System.Threading.CancellationToken/packages.lock.json
+++ b/Tests/System.Threading.CancellationToken/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.29, 2.0.0-preview.29]",
-        "resolved": "2.0.0-preview.29",
-        "contentHash": "7NDp9Sda9FTFBDN//X34r23rJBHUkCvyGvrFh9s5B8H2nMoet4J0OlEOiZRUsEPBXlsNpZFVp+Cd6OSjnLSg5A=="
+        "requested": "[2.0.0-preview.30, 2.0.0-preview.30]",
+        "resolved": "2.0.0-preview.30",
+        "contentHash": "Fz+5L0yOpe0ZoBpVRqH8G8Dr18OoXVE6sKertR/bPuWyOJiO42enlarudfv91/gpJXFkQGNCCdXpHWpoc77jyg=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.Threading.nuspec b/nanoFramework.System.Threading.nuspec
index 88de5b7..05e53a2 100644
--- a/nanoFramework.System.Threading.nuspec
+++ b/nanoFramework.System.Threading.nuspec
@@ -18,7 +18,7 @@
     <description>This package includes the nanoFramework.System.Threading assembly for .NET nanoFramework C# projects.</description>
     <tags>nanoFramework C# csharp netmf netnf </tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.29" />
+      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" />
     </dependencies>
   </metadata>
   <files>
@@ -32,4 +32,4 @@
     <file src="assets\nf-logo.png" target="images" />
     <file src="LICENSE.md" target="" />
   </files>
-</package>
+</package>
\ No newline at end of file
diff --git a/nanoFramework.System.Threading/nanoFramework.System.Threading.nfproj b/nanoFramework.System.Threading/nanoFramework.System.Threading.nfproj
index bac3b64..14d0280 100644
--- a/nanoFramework.System.Threading/nanoFramework.System.Threading.nfproj
+++ b/nanoFramework.System.Threading/nanoFramework.System.Threading.nfproj
@@ -68,8 +68,8 @@
     <Content Include="packages.lock.json" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.29\lib\netnano1.0\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.30\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/nanoFramework.System.Threading/packages.config b/nanoFramework.System.Threading/packages.config
index 99e498c..b07d6d6 100644
--- a/nanoFramework.System.Threading/packages.config
+++ b/nanoFramework.System.Threading/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.9.50" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.System.Threading/packages.lock.json b/nanoFramework.System.Threading/packages.lock.json
index 0e819fb..85dabf3 100644
--- a/nanoFramework.System.Threading/packages.lock.json
+++ b/nanoFramework.System.Threading/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.29, 2.0.0-preview.29]",
-        "resolved": "2.0.0-preview.29",
-        "contentHash": "7NDp9Sda9FTFBDN//X34r23rJBHUkCvyGvrFh9s5B8H2nMoet4J0OlEOiZRUsEPBXlsNpZFVp+Cd6OSjnLSg5A=="
+        "requested": "[2.0.0-preview.30, 2.0.0-preview.30]",
+        "resolved": "2.0.0-preview.30",
+        "contentHash": "Fz+5L0yOpe0ZoBpVRqH8G8Dr18OoXVE6sKertR/bPuWyOJiO42enlarudfv91/gpJXFkQGNCCdXpHWpoc77jyg=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",