diff --git a/Tests/IPAddressTests/IPAddressTests.nfproj b/Tests/IPAddressTests/IPAddressTests.nfproj
index 5e67c85..a081685 100644
--- a/Tests/IPAddressTests/IPAddressTests.nfproj
+++ b/Tests/IPAddressTests/IPAddressTests.nfproj
@@ -49,7 +49,7 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.52\lib\nanoFramework.UnitTestLauncher.exe</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.17\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.18\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/IPAddressTests/packages.config b/Tests/IPAddressTests/packages.config
index 7f22931..661dfc6 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.49" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.52" 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 db5db7a..dcc9a74 100644
--- a/Tests/IPAddressTests/packages.lock.json
+++ b/Tests/IPAddressTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
-        "resolved": "2.0.0-preview.17",
-        "contentHash": "bJNKElIzGlyTi6cgKnVcO4nrM8XOsNTBdSJygL62vZGBWBUZi7tJqjJTwfGgay/yMvKfNNnYYMg17jEXCwmEWw=="
+        "requested": "[2.0.0-preview.18, 2.0.0-preview.18]",
+        "resolved": "2.0.0-preview.18",
+        "contentHash": "X6Zv6eYRWqSY1eu7S7SwfIoFtFQfc8Rrl7CJN8dxuiry0K4SioSjuRFvnGerTnCWPEXy1gXGbbLRBVkYscw9fg=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
diff --git a/Tests/NetworkHelperTests/NetworkHelperTests.nfproj b/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
index e3a132f..14da172 100644
--- a/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
+++ b/Tests/NetworkHelperTests/NetworkHelperTests.nfproj
@@ -58,7 +58,7 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.52\lib\nanoFramework.UnitTestLauncher.exe</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.17\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.18\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.9\lib\netnano1.0\System.Threading.dll</HintPath>
diff --git a/Tests/NetworkHelperTests/packages.config b/Tests/NetworkHelperTests/packages.config
index 0a18105..c0a8dd3 100644
--- a/Tests/NetworkHelperTests/packages.config
+++ b/Tests/NetworkHelperTests/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Threading" version="2.0.0-preview.9" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.52" targetFramework="netnano1.0" developmentDependency="true" />
diff --git a/Tests/NetworkHelperTests/packages.lock.json b/Tests/NetworkHelperTests/packages.lock.json
index 9580479..570bbd1 100644
--- a/Tests/NetworkHelperTests/packages.lock.json
+++ b/Tests/NetworkHelperTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
-        "resolved": "2.0.0-preview.17",
-        "contentHash": "bJNKElIzGlyTi6cgKnVcO4nrM8XOsNTBdSJygL62vZGBWBUZi7tJqjJTwfGgay/yMvKfNNnYYMg17jEXCwmEWw=="
+        "requested": "[2.0.0-preview.18, 2.0.0-preview.18]",
+        "resolved": "2.0.0-preview.18",
+        "contentHash": "X6Zv6eYRWqSY1eu7S7SwfIoFtFQfc8Rrl7CJN8dxuiry0K4SioSjuRFvnGerTnCWPEXy1gXGbbLRBVkYscw9fg=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
diff --git a/Tests/SocketTests/SocketTests.nfproj b/Tests/SocketTests/SocketTests.nfproj
index 755c9e7..90cd0d5 100644
--- a/Tests/SocketTests/SocketTests.nfproj
+++ b/Tests/SocketTests/SocketTests.nfproj
@@ -52,7 +52,7 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.52\lib\nanoFramework.UnitTestLauncher.exe</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.17\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.18\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/SocketTests/packages.config b/Tests/SocketTests/packages.config
index 7f22931..661dfc6 100644
--- a/Tests/SocketTests/packages.config
+++ b/Tests/SocketTests/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.52" 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 db5db7a..dcc9a74 100644
--- a/Tests/SocketTests/packages.lock.json
+++ b/Tests/SocketTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
-        "resolved": "2.0.0-preview.17",
-        "contentHash": "bJNKElIzGlyTi6cgKnVcO4nrM8XOsNTBdSJygL62vZGBWBUZi7tJqjJTwfGgay/yMvKfNNnYYMg17jEXCwmEWw=="
+        "requested": "[2.0.0-preview.18, 2.0.0-preview.18]",
+        "resolved": "2.0.0-preview.18",
+        "contentHash": "X6Zv6eYRWqSY1eu7S7SwfIoFtFQfc8Rrl7CJN8dxuiry0K4SioSjuRFvnGerTnCWPEXy1gXGbbLRBVkYscw9fg=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
diff --git a/nanoFramework.System.Net.nuspec b/nanoFramework.System.Net.nuspec
index 2423418..e48378d 100644
--- a/nanoFramework.System.Net.nuspec
+++ b/nanoFramework.System.Net.nuspec
@@ -24,7 +24,7 @@ This package requires a target with System.Net v$nativeVersion$ (checksum $check
         <dependency id="nanoFramework.Runtime.Events" version="2.0.0-preview.12" />
         <dependency id="nanoFramework.System.Text" version="2.0.0-preview.18" />
         <dependency id="nanoFramework.System.Threading" version="2.0.0-preview.9" />
-        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.17" />
+        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.18" />
       </group>
     </dependencies>
   </metadata>
diff --git a/nanoFramework.System.Net/System.Net.nfproj b/nanoFramework.System.Net/System.Net.nfproj
index 6621443..2d0ffeb 100644
--- a/nanoFramework.System.Net/System.Net.nfproj
+++ b/nanoFramework.System.Net/System.Net.nfproj
@@ -142,7 +142,7 @@
       <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.18\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.17\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.18\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.9\lib\netnano1.0\System.Threading.dll</HintPath>
diff --git a/nanoFramework.System.Net/packages.config b/nanoFramework.System.Net/packages.config
index 8e7f0fe..1277f0c 100644
--- a/nanoFramework.System.Net/packages.config
+++ b/nanoFramework.System.Net/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.12" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Threading" version="2.0.0-preview.9" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.9.50" developmentDependency="true" targetFramework="netnano1.0" />
diff --git a/nanoFramework.System.Net/packages.lock.json b/nanoFramework.System.Net/packages.lock.json
index 7131802..1084fff 100644
--- a/nanoFramework.System.Net/packages.lock.json
+++ b/nanoFramework.System.Net/packages.lock.json
@@ -16,9 +16,9 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
-        "resolved": "2.0.0-preview.17",
-        "contentHash": "bJNKElIzGlyTi6cgKnVcO4nrM8XOsNTBdSJygL62vZGBWBUZi7tJqjJTwfGgay/yMvKfNNnYYMg17jEXCwmEWw=="
+        "requested": "[2.0.0-preview.18, 2.0.0-preview.18]",
+        "resolved": "2.0.0-preview.18",
+        "contentHash": "X6Zv6eYRWqSY1eu7S7SwfIoFtFQfc8Rrl7CJN8dxuiry0K4SioSjuRFvnGerTnCWPEXy1gXGbbLRBVkYscw9fg=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",