diff --git a/Tests/SerializationTests/SerializationTests.nfproj b/Tests/SerializationTests/SerializationTests.nfproj
index eb36162..e70dcfd 100644
--- a/Tests/SerializationTests/SerializationTests.nfproj
+++ b/Tests/SerializationTests/SerializationTests.nfproj
@@ -38,8 +38,8 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.32\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.33\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework">
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.TestFramework.dll</HintPath>
diff --git a/Tests/SerializationTests/packages.config b/Tests/SerializationTests/packages.config
index a4c64b2..37e6b3b 100644
--- a/Tests/SerializationTests/packages.config
+++ b/Tests/SerializationTests/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.32" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.47" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/SerializationTests/packages.lock.json b/Tests/SerializationTests/packages.lock.json
index 104c482..af373fe 100644
--- a/Tests/SerializationTests/packages.lock.json
+++ b/Tests/SerializationTests/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.32, 2.0.0-preview.32]",
-        "resolved": "2.0.0-preview.32",
-        "contentHash": "DZ0CI92bJCTQ+2pGJiRxcqYEzmjMppg2elFZEZCGB6kUPjUoGV8o+NnFb5bn2X0Nl+b+8Wq5BLzGBbn8C05oKQ=="
+        "requested": "[2.0.0-preview.33, 2.0.0-preview.33]",
+        "resolved": "2.0.0-preview.33",
+        "contentHash": "VVr+TmThdBt9zzXFzFewB5GUsNm2BE8+/3OtaCiJVg76v0Wr87A0Mi6R74hm78otfIhPJ66aPaRd+fA23dmJjQ=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.Runtime.Serialization.nuspec b/nanoFramework.System.Runtime.Serialization.nuspec
index d565c1c..b472151 100644
--- a/nanoFramework.System.Runtime.Serialization.nuspec
+++ b/nanoFramework.System.Runtime.Serialization.nuspec
@@ -19,7 +19,7 @@
 This package requires a target with nanoFramework.System.Runtime.Serialization v$nativeVersion$ (checksum $checksum$).</description>
     <tags>nanoFramework C# csharp netmf netnf nanoFramework.System.Runtime.Serialization</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.32" />
+      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" />
     </dependencies>
   </metadata>
   <files>
@@ -33,4 +33,4 @@ This package requires a target with nanoFramework.System.Runtime.Serialization v
     <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.Runtime.Serialization/System.Runtime.Serialization.nfproj b/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
index bb24dcc..d472f13 100644
--- a/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
+++ b/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
@@ -57,8 +57,8 @@
     <Content Include="packages.lock.json" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.32\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.33\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="..\Serialization.Shared\Serialization.Shared.projitems" Label="Shared" />
diff --git a/nanoFramework.System.Runtime.Serialization/packages.config b/nanoFramework.System.Runtime.Serialization/packages.config
index bd36bfd..d09267f 100644
--- a/nanoFramework.System.Runtime.Serialization/packages.config
+++ b/nanoFramework.System.Runtime.Serialization/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.32" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.9.50" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.System.Runtime.Serialization/packages.lock.json b/nanoFramework.System.Runtime.Serialization/packages.lock.json
index d3b4e4e..f3f8f2e 100644
--- a/nanoFramework.System.Runtime.Serialization/packages.lock.json
+++ b/nanoFramework.System.Runtime.Serialization/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.32, 2.0.0-preview.32]",
-        "resolved": "2.0.0-preview.32",
-        "contentHash": "DZ0CI92bJCTQ+2pGJiRxcqYEzmjMppg2elFZEZCGB6kUPjUoGV8o+NnFb5bn2X0Nl+b+8Wq5BLzGBbn8C05oKQ=="
+        "requested": "[2.0.0-preview.33, 2.0.0-preview.33]",
+        "resolved": "2.0.0-preview.33",
+        "contentHash": "VVr+TmThdBt9zzXFzFewB5GUsNm2BE8+/3OtaCiJVg76v0Wr87A0Mi6R74hm78otfIhPJ66aPaRd+fA23dmJjQ=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",