diff --git a/System.IO.Streams/System.IO.Streams.nfproj b/System.IO.Streams/System.IO.Streams.nfproj
index e521346..9d33f49 100644
--- a/System.IO.Streams/System.IO.Streams.nfproj
+++ b/System.IO.Streams/System.IO.Streams.nfproj
@@ -53,8 +53,8 @@
     <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>
     <Reference Include="nanoFramework.System.Text">
       <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.1\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/System.IO.Streams/packages.config b/System.IO.Streams/packages.config
index 2faf6fd..9ab62e2 100644
--- a/System.IO.Streams/packages.config
+++ b/System.IO.Streams/packages.config
@@ -1,6 +1,6 @@
 <?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.System.Text" version="2.0.0-preview.1" 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/System.IO.Streams/packages.lock.json b/System.IO.Streams/packages.lock.json
index 703f11a..0550fb8 100644
--- a/System.IO.Streams/packages.lock.json
+++ b/System.IO.Streams/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.System.Text": {
         "type": "Direct",
diff --git a/UnitTests/MemoryStreamUnitTests/MemoryStreamUnitTests.nfproj b/UnitTests/MemoryStreamUnitTests/MemoryStreamUnitTests.nfproj
index 8f8f9ea..ff1eb5b 100644
--- a/UnitTests/MemoryStreamUnitTests/MemoryStreamUnitTests.nfproj
+++ b/UnitTests/MemoryStreamUnitTests/MemoryStreamUnitTests.nfproj
@@ -46,8 +46,8 @@
     <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.System.Text">
       <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.1\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/UnitTests/MemoryStreamUnitTests/packages.config b/UnitTests/MemoryStreamUnitTests/packages.config
index 739f654..02cfcb5 100644
--- a/UnitTests/MemoryStreamUnitTests/packages.config
+++ b/UnitTests/MemoryStreamUnitTests/packages.config
@@ -1,6 +1,6 @@
 <?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.System.Text" version="2.0.0-preview.1" 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/UnitTests/MemoryStreamUnitTests/packages.lock.json b/UnitTests/MemoryStreamUnitTests/packages.lock.json
index 5ba6a2c..eeb7964 100644
--- a/UnitTests/MemoryStreamUnitTests/packages.lock.json
+++ b/UnitTests/MemoryStreamUnitTests/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.System.Text": {
         "type": "Direct",
diff --git a/UnitTests/StreamReaderWriterUnitTests/StreamReaderWriterUnitTests.nfproj b/UnitTests/StreamReaderWriterUnitTests/StreamReaderWriterUnitTests.nfproj
index 5cd31b0..273cb40 100644
--- a/UnitTests/StreamReaderWriterUnitTests/StreamReaderWriterUnitTests.nfproj
+++ b/UnitTests/StreamReaderWriterUnitTests/StreamReaderWriterUnitTests.nfproj
@@ -31,8 +31,8 @@
     <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.System.Text">
       <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.1\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/UnitTests/StreamReaderWriterUnitTests/packages.config b/UnitTests/StreamReaderWriterUnitTests/packages.config
index 739f654..02cfcb5 100644
--- a/UnitTests/StreamReaderWriterUnitTests/packages.config
+++ b/UnitTests/StreamReaderWriterUnitTests/packages.config
@@ -1,6 +1,6 @@
 <?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.System.Text" version="2.0.0-preview.1" 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/UnitTests/StreamReaderWriterUnitTests/packages.lock.json b/UnitTests/StreamReaderWriterUnitTests/packages.lock.json
index 5ba6a2c..eeb7964 100644
--- a/UnitTests/StreamReaderWriterUnitTests/packages.lock.json
+++ b/UnitTests/StreamReaderWriterUnitTests/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.System.Text": {
         "type": "Direct",
diff --git a/nanoFramework.System.IO.Streams.nuspec b/nanoFramework.System.IO.Streams.nuspec
index 7b5bc7e..5382426 100644
--- a/nanoFramework.System.IO.Streams.nuspec
+++ b/nanoFramework.System.IO.Streams.nuspec
@@ -18,7 +18,7 @@
     <description>This package includes the System.IO.Streams 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" />
       <dependency id="nanoFramework.System.Text" version="2.0.0-preview.1" />
     </dependencies>
   </metadata>
@@ -33,4 +33,4 @@
     <file src="assets\nf-logo.png" target="images" />
     <file src="LICENSE.md" target="" />
   </files>
-</package>
+</package>
\ No newline at end of file