diff --git a/nanoFramework.WebServer.nuspec b/nanoFramework.WebServer.nuspec
index 7aa8d44..dd1ec7c 100644
--- a/nanoFramework.WebServer.nuspec
+++ b/nanoFramework.WebServer.nuspec
@@ -23,14 +23,14 @@
     <copyright>Copyright (c) .NET Foundation and Contributors</copyright>
     <tags>http https webserver net netmf nf nanoframework</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.7" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.20" />
       <dependency id="nanoFramework.Runtime.Events" version="1.9.0-preview.16" />
-      <dependency id="nanoFramework.System.Collections" version="1.2.0-preview.39" />
-      <dependency id="nanoFramework.System.Text" version="1.1.1-preview.40" />
-      <dependency id="nanoFramework.System.Net" version="1.3.4-preview.9" />
-      <dependency id="nanoFramework.System.Net.Http.Server" version="1.3.4-preview.10" />
-      <dependency id="nanoFramework.Windows.Storage" version="1.4.4-preview.57" />
-      <dependency id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.31" />
+      <dependency id="nanoFramework.System.Collections" version="1.2.0-preview.43" />
+      <dependency id="nanoFramework.System.Text" version="1.1.1-preview.45" />
+      <dependency id="nanoFramework.System.Net" version="1.3.4-preview.10" />
+      <dependency id="nanoFramework.System.Net.Http.Server" version="1.3.4-preview.14" />
+      <dependency id="nanoFramework.Windows.Storage" version="1.10.1-preview.31" />
+      <dependency id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.36" />
     </dependencies>
   </metadata>
   <files>
@@ -39,4 +39,4 @@
     <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.WebServer/nanoFramework.WebServer.nfproj b/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
index a4015a7..811b61b 100644
--- a/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
+++ b/nanoFramework.WebServer/nanoFramework.WebServer.nfproj
@@ -45,7 +45,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=1.10.3.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.10.3-preview.7\lib\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.10.3-preview.20\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.9.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
@@ -53,27 +53,27 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=1.2.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.2.0-preview.39\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.1.2.0-preview.43\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.1.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.40\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.1.1.1-preview.45\lib\nanoFramework.System.Text.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net, Version=1.6.5.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.1.6.5-preview.7\lib\System.Net.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.1.6.5-preview.12\lib\System.Net.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=1.3.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.Http.Server.1.3.4-preview.10\lib\System.Net.Http.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.Http.Server.1.3.4-preview.14\lib\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Windows.Storage, Version=1.4.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Windows.Storage.1.4.4-preview.57\lib\Windows.Storage.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Windows.Storage.1.4.4-preview.61\lib\Windows.Storage.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Windows.Storage.Streams, Version=1.10.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Windows.Storage.Streams.1.10.1-preview.31\lib\Windows.Storage.Streams.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Windows.Storage.Streams.1.10.1-preview.36\lib\Windows.Storage.Streams.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
diff --git a/nanoFramework.WebServer/packages.config b/nanoFramework.WebServer/packages.config
index b81a279..4e25986 100644
--- a/nanoFramework.WebServer/packages.config
+++ b/nanoFramework.WebServer/packages.config
@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.10.3-preview.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.10.3-preview.20" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.9.0-preview.16" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.2.0-preview.39" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net" version="1.6.5-preview.7" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net.Http.Server" version="1.3.4-preview.10" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Text" version="1.1.1-preview.40" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.Windows.Storage" version="1.4.4-preview.57" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.31" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.2.0-preview.43" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net" version="1.6.5-preview.12" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net.Http.Server" version="1.3.4-preview.14" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Text" version="1.1.1-preview.45" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.Windows.Storage" version="1.4.4-preview.61" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.Windows.Storage.Streams" version="1.10.1-preview.36" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.1.91" developmentDependency="true" targetFramework="netnanoframework10" />
 </packages>
\ No newline at end of file