diff --git a/Tests/IPAddressTests/IPAddressTests.nfproj b/Tests/IPAddressTests/IPAddressTests.nfproj
index 0681317..2adc585 100644
--- a/Tests/IPAddressTests/IPAddressTests.nfproj
+++ b/Tests/IPAddressTests/IPAddressTests.nfproj
@@ -40,7 +40,7 @@
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+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
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     <Reference Include="nanoFramework.TestFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
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+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.29\lib\netnano1.0\System.IO.Streams.dll</HintPath>
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   <ItemGroup>
diff --git a/Tests/IPAddressTests/packages.config b/Tests/IPAddressTests/packages.config
index 753e0fc..241ffc1 100644
--- a/Tests/IPAddressTests/packages.config
+++ b/Tests/IPAddressTests/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.22" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.23" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.37" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.64" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/IPAddressTests/packages.lock.json b/Tests/IPAddressTests/packages.lock.json
index 78930df..11d7177 100644
--- a/Tests/IPAddressTests/packages.lock.json
+++ b/Tests/IPAddressTests/packages.lock.json
@@ -10,15 +10,15 @@
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+        "requested": "[2.0.0-preview.29, 2.0.0-preview.29]",
+        "resolved": "2.0.0-preview.29",
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+        "requested": "[2.0.0-preview.37, 2.0.0-preview.37]",
+        "resolved": "2.0.0-preview.37",
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diff --git a/Tests/NetworkHelperTests/NetworkHelperTests.nfproj b/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
index 1fa55e3..8618807 100644
--- a/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
+++ b/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
@@ -49,7 +49,7 @@
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     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.23\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
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@@ -58,10 +58,10 @@
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-      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.22\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.29\lib\netnano1.0\System.IO.Streams.dll</HintPath>
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-      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.14\lib\netnano1.0\System.Threading.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.20\lib\netnano1.0\System.Threading.dll</HintPath>
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   <ItemGroup>
diff --git a/Tests/NetworkHelperTests/packages.config b/Tests/NetworkHelperTests/packages.config
index 219a9d1..f1fe950 100644
--- a/Tests/NetworkHelperTests/packages.config
+++ b/Tests/NetworkHelperTests/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.22" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.23" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Threading" version="2.0.0-preview.14" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.37" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Threading" version="2.0.0-preview.20" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.64" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/NetworkHelperTests/packages.lock.json b/Tests/NetworkHelperTests/packages.lock.json
index 4cb4667..e86ad22 100644
--- a/Tests/NetworkHelperTests/packages.lock.json
+++ b/Tests/NetworkHelperTests/packages.lock.json
@@ -10,21 +10,21 @@
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+        "requested": "[2.0.0-preview.37, 2.0.0-preview.37]",
+        "resolved": "2.0.0-preview.37",
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+        "requested": "[2.0.0-preview.20, 2.0.0-preview.20]",
+        "resolved": "2.0.0-preview.20",
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diff --git a/Tests/SocketTests/SocketTests.nfproj b/Tests/SocketTests/SocketTests.nfproj
index 1d05832..b0220ca 100644
--- a/Tests/SocketTests/SocketTests.nfproj
+++ b/Tests/SocketTests/SocketTests.nfproj
@@ -47,7 +47,7 @@
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-      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.23\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
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@@ -56,10 +56,10 @@
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-      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.22\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.29\lib\netnano1.0\System.IO.Streams.dll</HintPath>
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-    <Reference Include="System.Threading">
-      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.14\lib\netnano1.0\System.Threading.dll</HintPath>
+    <Reference Include="System.Threading, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.20\lib\netnano1.0\System.Threading.dll</HintPath>
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   <ItemGroup>
diff --git a/Tests/SocketTests/packages.config b/Tests/SocketTests/packages.config
index 219a9d1..f1fe950 100644
--- a/Tests/SocketTests/packages.config
+++ b/Tests/SocketTests/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
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-  <package id="nanoFramework.System.Threading" version="2.0.0-preview.14" targetFramework="netnano1.0" />
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+  <package id="nanoFramework.System.Text" version="2.0.0-preview.37" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Threading" version="2.0.0-preview.20" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.64" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/SocketTests/packages.lock.json b/Tests/SocketTests/packages.lock.json
index 4cb4667..e86ad22 100644
--- a/Tests/SocketTests/packages.lock.json
+++ b/Tests/SocketTests/packages.lock.json
@@ -10,21 +10,21 @@
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diff --git a/Tests/SslStreamTests/SslStreamTests.nfproj b/Tests/SslStreamTests/SslStreamTests.nfproj
index 326e1a0..44f5469 100644
--- a/Tests/SslStreamTests/SslStreamTests.nfproj
+++ b/Tests/SslStreamTests/SslStreamTests.nfproj
@@ -45,8 +45,8 @@
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-      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.23\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+    <Reference Include="nanoFramework.System.Text, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
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-    <Reference Include="System.Threading">
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+    <Reference Include="System.Threading, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.20\lib\netnano1.0\System.Threading.dll</HintPath>
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diff --git a/Tests/SslStreamTests/packages.config b/Tests/SslStreamTests/packages.config
index 219a9d1..f1fe950 100644
--- a/Tests/SslStreamTests/packages.config
+++ b/Tests/SslStreamTests/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
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\ No newline at end of file
diff --git a/Tests/SslStreamTests/packages.lock.json b/Tests/SslStreamTests/packages.lock.json
index 4cb4667..e86ad22 100644
--- a/Tests/SslStreamTests/packages.lock.json
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@@ -10,21 +10,21 @@
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diff --git a/Tests/SslStreamTests_WiFi/SslStreamTests_WiFi.nfproj b/Tests/SslStreamTests_WiFi/SslStreamTests_WiFi.nfproj
index cb9323a..f600fb2 100644
--- a/Tests/SslStreamTests_WiFi/SslStreamTests_WiFi.nfproj
+++ b/Tests/SslStreamTests_WiFi/SslStreamTests_WiFi.nfproj
@@ -39,11 +39,11 @@
     <Reference Include="mscorlib">
       <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.63\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.Runtime.Events">
-      <HintPath>..\..\packages\nanoFramework.Runtime.Events.2.0.0-preview.13\lib\netnano1.0\nanoFramework.Runtime.Events.dll</HintPath>
+    <Reference Include="nanoFramework.Runtime.Events, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.Runtime.Events.2.0.0-preview.17\lib\netnano1.0\nanoFramework.Runtime.Events.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Text">
-      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.23\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+    <Reference Include="nanoFramework.System.Text, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.64\lib\netnano1.0\nanoFramework.TestFramework.dll</HintPath>
@@ -52,16 +52,16 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.64\lib\netnano1.0\nanoFramework.UnitTestLauncher.exe</HintPath>
     </Reference>
     <Reference Include="System.Device.Wifi, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Device.Wifi.2.0.0-preview.36\lib\netnano1.0\System.Device.Wifi.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Device.Wifi.2.0.0-preview.39\lib\netnano1.0\System.Device.Wifi.dll</HintPath>
     </Reference>
-    <Reference Include="System.IO.Streams">
-      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.22\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+    <Reference Include="System.IO.Streams, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.29\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
     <Reference Include="System.Net, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Net.2.0.0-preview.39\lib\netnano1.0\System.Net.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Net.2.0.0-preview.42\lib\netnano1.0\System.Net.dll</HintPath>
     </Reference>
-    <Reference Include="System.Threading">
-      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.14\lib\netnano1.0\System.Threading.dll</HintPath>
+    <Reference Include="System.Threading, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Threading.2.0.0-preview.20\lib\netnano1.0\System.Threading.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/SslStreamTests_WiFi/packages.config b/Tests/SslStreamTests_WiFi/packages.config
index a5aac84..eebe8c7 100644
--- a/Tests/SslStreamTests_WiFi/packages.config
+++ b/Tests/SslStreamTests_WiFi/packages.config
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.13" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Device.Wifi" version="2.0.0-preview.36" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.22" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Net" version="2.0.0-preview.39" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.23" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Threading" version="2.0.0-preview.14" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Device.Wifi" version="2.0.0-preview.39" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Net" version="2.0.0-preview.42" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.37" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Threading" version="2.0.0-preview.20" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.64" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/SslStreamTests_WiFi/packages.lock.json b/Tests/SslStreamTests_WiFi/packages.lock.json
index 0b753dc..31e5ba7 100644
--- a/Tests/SslStreamTests_WiFi/packages.lock.json
+++ b/Tests/SslStreamTests_WiFi/packages.lock.json
@@ -10,39 +10,39 @@
       },
       "nanoFramework.Runtime.Events": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "LmPsdvTKJ5HiJbX0FNFWWIvHh23kWmKWCIHggSnMrjaZnjXubqct75mQiB2aWtC7IW0PjGxB2A4cvtle3Zjvzg=="
+        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
+        "resolved": "2.0.0-preview.17",
+        "contentHash": "m+hCcq3jtakTPnsufdZY8Mv/Akh+MIk11qUV9+GCq9Io7lXgnI5oDOfOO0lx2Z3fPGgoP4o3YwL9mGycc4tbeQ=="
       },
       "nanoFramework.System.Device.Wifi": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.36, 2.0.0-preview.36]",
-        "resolved": "2.0.0-preview.36",
-        "contentHash": "WTsWCUKEOjj7////m57TuepSgNZBu1uFULcWnRNATmkpROZdnk1AtsNMje1qcMc7mDNAt5Ws/QJtIRZFlROnyQ=="
+        "requested": "[2.0.0-preview.39, 2.0.0-preview.39]",
+        "resolved": "2.0.0-preview.39",
+        "contentHash": "ts7dGQuPcmSdzd0gr/aqbRHFvC/5+CbJsknRSJ4aOv3CeNzdKwAdfplUhQn/C9qCMu7bwMe4od7ZVw8iYGwbRw=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.22, 2.0.0-preview.22]",
-        "resolved": "2.0.0-preview.22",
-        "contentHash": "TwAY/tgMEZwEP06SjKElRKs+y8mzRNe3D32J+x/IhUtJmjnowv37BQwPpycOH3w5TWjf95YDP4AUFsDhjGs4Vg=="
+        "requested": "[2.0.0-preview.29, 2.0.0-preview.29]",
+        "resolved": "2.0.0-preview.29",
+        "contentHash": "exgyNKMBNVJIo0kFOw9tLHZAjvAA7MqnYKXR22YRZRgo1M99fzhTTJrK4L3qqhnnGcdHji95oadRZ56pI9oiFQ=="
       },
       "nanoFramework.System.Net": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.39, 2.0.0-preview.39]",
-        "resolved": "2.0.0-preview.39",
-        "contentHash": "XbvsoqFvWPQp4LlACnLvURrbfZNwK5Fk7gzUgxwnDDuU49f1TgG89Z/526MWnJ3i1sm/kRJnOROgDXhQvnyecg=="
+        "requested": "[2.0.0-preview.42, 2.0.0-preview.42]",
+        "resolved": "2.0.0-preview.42",
+        "contentHash": "Rpzd8kHg9hVW2kDhtDeFeZQpbUNzaFHoH1gRxm8a5UrJEO2PVAGK1C3YX18++wU2cSXAkKAyon8Big+i/z5TPg=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.23, 2.0.0-preview.23]",
-        "resolved": "2.0.0-preview.23",
-        "contentHash": "ZS+T/tUqF37IFnwi4GzBLfCAiffafbOExYZSmZeKrB0NVMkms/8onBgwIw8rN9I5WmzugbQCNKGY+jdJF9s2/A=="
+        "requested": "[2.0.0-preview.37, 2.0.0-preview.37]",
+        "resolved": "2.0.0-preview.37",
+        "contentHash": "U8Evi6mLwAW8BXlLAZGYXgqqtOO/4XJvnBFomPVsJqyePGnzHBNTpOoNc2UzvjQckOZ3MynHI0GgrY5x8xhAdw=="
       },
       "nanoFramework.System.Threading": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.14, 2.0.0-preview.14]",
-        "resolved": "2.0.0-preview.14",
-        "contentHash": "4JBZx5/Y3Dd5BZJXHEOw6rD54aWL1p7W2f9QrLRgRQrprIO6AylEFlH2tQuxlyE5YtNRRxaapW4s2mZiOs0Wxg=="
+        "requested": "[2.0.0-preview.20, 2.0.0-preview.20]",
+        "resolved": "2.0.0-preview.20",
+        "contentHash": "ewf2PBoWGzlk+PGXEEhmox4xfpREYqI6psrxbx+YXWENGYjQjWxpQeCQQXO/n1VktODhIWUeGqX8JmFJFyJD1A=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.Net.nuspec b/nanoFramework.System.Net.nuspec
index cd37ef0..e1a95d9 100644
--- a/nanoFramework.System.Net.nuspec
+++ b/nanoFramework.System.Net.nuspec
@@ -21,10 +21,10 @@ This package requires a target with System.Net native contract hash $nativeContr
     <dependencies>
       <group targetFramework=".NETnanoFramework1.0">
         <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" />
-        <dependency id="nanoFramework.Runtime.Events" version="2.0.0-preview.13" />
-        <dependency id="nanoFramework.System.Text" version="2.0.0-preview.23" />
-        <dependency id="nanoFramework.System.Threading" version="2.0.0-preview.14" />
-        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.22" />
+        <dependency id="nanoFramework.Runtime.Events" version="2.0.0-preview.17" />
+        <dependency id="nanoFramework.System.Text" version="2.0.0-preview.37" />
+        <dependency id="nanoFramework.System.Threading" version="2.0.0-preview.20" />
+        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.29" />
       </group>
     </dependencies>
   </metadata>
diff --git a/nanoFramework.System.Net/System.Net.nfproj b/nanoFramework.System.Net/System.Net.nfproj
index e7a0f69..3302796 100644
--- a/nanoFramework.System.Net/System.Net.nfproj
+++ b/nanoFramework.System.Net/System.Net.nfproj
@@ -94,16 +94,16 @@
       <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.63\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Runtime.Events.2.0.0-preview.13\lib\netnano1.0\nanoFramework.Runtime.Events.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Runtime.Events.2.0.0-preview.17\lib\netnano1.0\nanoFramework.Runtime.Events.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.23\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="System.IO.Streams, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.22\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.29\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
     <Reference Include="System.Threading, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Threading.2.0.0-preview.14\lib\netnano1.0\System.Threading.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Threading.2.0.0-preview.20\lib\netnano1.0\System.Threading.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/nanoFramework.System.Net/packages.config b/nanoFramework.System.Net/packages.config
index d3d58ee..ffdd359 100644
--- a/nanoFramework.System.Net/packages.config
+++ b/nanoFramework.System.Net/packages.config
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.13" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.22" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.23" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Threading" version="2.0.0-preview.14" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.29" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.37" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Threading" version="2.0.0-preview.20" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.10.94" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.System.Net/packages.lock.json b/nanoFramework.System.Net/packages.lock.json
index 7a7dba2..25a3374 100644
--- a/nanoFramework.System.Net/packages.lock.json
+++ b/nanoFramework.System.Net/packages.lock.json
@@ -10,27 +10,27 @@
       },
       "nanoFramework.Runtime.Events": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "LmPsdvTKJ5HiJbX0FNFWWIvHh23kWmKWCIHggSnMrjaZnjXubqct75mQiB2aWtC7IW0PjGxB2A4cvtle3Zjvzg=="
+        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
+        "resolved": "2.0.0-preview.17",
+        "contentHash": "m+hCcq3jtakTPnsufdZY8Mv/Akh+MIk11qUV9+GCq9Io7lXgnI5oDOfOO0lx2Z3fPGgoP4o3YwL9mGycc4tbeQ=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.22, 2.0.0-preview.22]",
-        "resolved": "2.0.0-preview.22",
-        "contentHash": "TwAY/tgMEZwEP06SjKElRKs+y8mzRNe3D32J+x/IhUtJmjnowv37BQwPpycOH3w5TWjf95YDP4AUFsDhjGs4Vg=="
+        "requested": "[2.0.0-preview.29, 2.0.0-preview.29]",
+        "resolved": "2.0.0-preview.29",
+        "contentHash": "exgyNKMBNVJIo0kFOw9tLHZAjvAA7MqnYKXR22YRZRgo1M99fzhTTJrK4L3qqhnnGcdHji95oadRZ56pI9oiFQ=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
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-        "resolved": "2.0.0-preview.23",
-        "contentHash": "ZS+T/tUqF37IFnwi4GzBLfCAiffafbOExYZSmZeKrB0NVMkms/8onBgwIw8rN9I5WmzugbQCNKGY+jdJF9s2/A=="
+        "requested": "[2.0.0-preview.37, 2.0.0-preview.37]",
+        "resolved": "2.0.0-preview.37",
+        "contentHash": "U8Evi6mLwAW8BXlLAZGYXgqqtOO/4XJvnBFomPVsJqyePGnzHBNTpOoNc2UzvjQckOZ3MynHI0GgrY5x8xhAdw=="
       },
       "nanoFramework.System.Threading": {
         "type": "Direct",
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+        "requested": "[2.0.0-preview.20, 2.0.0-preview.20]",
+        "resolved": "2.0.0-preview.20",
+        "contentHash": "ewf2PBoWGzlk+PGXEEhmox4xfpREYqI6psrxbx+YXWENGYjQjWxpQeCQQXO/n1VktODhIWUeGqX8JmFJFyJD1A=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",