diff --git a/Tests/SerializationTests/SerializationTests.nfproj b/Tests/SerializationTests/SerializationTests.nfproj
index 0992a8f..76bb45a 100644
--- a/Tests/SerializationTests/SerializationTests.nfproj
+++ b/Tests/SerializationTests/SerializationTests.nfproj
@@ -39,7 +39,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.39\lib\netnano1.0\mscorlib.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.43\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 35abca0..8691514 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.39" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" 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 0fc2712..5ee00c5 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.39, 2.0.0-preview.39]",
-        "resolved": "2.0.0-preview.39",
-        "contentHash": "rkXOwaEq6GIm+dKZ7ICMrG23mln482vRXyDtaNfAeBpgGcgiuFJrbw7w0TTZ2DNhw1CUWlCWZZbXi6+/NHdpLg=="
+        "requested": "[2.0.0-preview.43, 2.0.0-preview.43]",
+        "resolved": "2.0.0-preview.43",
+        "contentHash": "ijOdswxNI+zhN7MrRMjJPe7pAVhqARvpEOFKUKH6D18NUS3CCQ9+IoyVs3zJhmmBk53YmAErFAdCnAWLVxUu8Q=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.Runtime.Serialization.nuspec b/nanoFramework.System.Runtime.Serialization.nuspec
index fdca890..79b902e 100644
--- a/nanoFramework.System.Runtime.Serialization.nuspec
+++ b/nanoFramework.System.Runtime.Serialization.nuspec
@@ -20,7 +20,7 @@ This package requires a target with nanoFramework.System.Runtime.Serialization v
     <tags>nanoFramework C# csharp netmf netnf nanoFramework.System.Runtime.Serialization</tags>
     <dependencies>
       <group targetFramework=".NETnanoFramework1.0">
-        <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.39" />
+        <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" />
       </group>
     </dependencies>
   </metadata>
diff --git a/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj b/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
index cd08274..64a4837 100644
--- a/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
+++ b/nanoFramework.System.Runtime.Serialization/System.Runtime.Serialization.nfproj
@@ -58,7 +58,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.39\lib\netnano1.0\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.43\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 25b1762..04380f9 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.39" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" 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 e04980a..bb57127 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.39, 2.0.0-preview.39]",
-        "resolved": "2.0.0-preview.39",
-        "contentHash": "rkXOwaEq6GIm+dKZ7ICMrG23mln482vRXyDtaNfAeBpgGcgiuFJrbw7w0TTZ2DNhw1CUWlCWZZbXi6+/NHdpLg=="
+        "requested": "[2.0.0-preview.43, 2.0.0-preview.43]",
+        "resolved": "2.0.0-preview.43",
+        "contentHash": "ijOdswxNI+zhN7MrRMjJPe7pAVhqARvpEOFKUKH6D18NUS3CCQ9+IoyVs3zJhmmBk53YmAErFAdCnAWLVxUu8Q=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",