diff --git a/System.IO.Hashing/System.IO.Hashing.nfproj b/System.IO.Hashing/System.IO.Hashing.nfproj
index 9383552..1bf8d79 100644
--- a/System.IO.Hashing/System.IO.Hashing.nfproj
+++ b/System.IO.Hashing/System.IO.Hashing.nfproj
@@ -55,7 +55,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.43\lib\netnano1.0\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.49\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/System.IO.Hashing/packages.config b/System.IO.Hashing/packages.config
index 5199020..d36e7c2 100644
--- a/System.IO.Hashing/packages.config
+++ b/System.IO.Hashing/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" 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.Hashing/packages.lock.json b/System.IO.Hashing/packages.lock.json
index bb57127..e95d3b5 100644
--- a/System.IO.Hashing/packages.lock.json
+++ b/System.IO.Hashing/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.43, 2.0.0-preview.43]",
-        "resolved": "2.0.0-preview.43",
-        "contentHash": "ijOdswxNI+zhN7MrRMjJPe7pAVhqARvpEOFKUKH6D18NUS3CCQ9+IoyVs3zJhmmBk53YmAErFAdCnAWLVxUu8Q=="
+        "requested": "[2.0.0-preview.49, 2.0.0-preview.49]",
+        "resolved": "2.0.0-preview.49",
+        "contentHash": "/8/fw1qqEql05aelTR9QQi4ZF2M+Mdwuemjf9rul8yaOpl6jjnhhKfdRJMh4+BXp5VjwTZsALJVpp2aN+e7vzw=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",
diff --git a/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj b/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
index 3a9e862..517fdd5 100644
--- a/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
+++ b/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
@@ -32,16 +32,16 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.43\lib\netnano1.0\mscorlib.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.49\lib\netnano1.0\mscorlib.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.15\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.18\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.49\lib\nanoFramework.TestFramework.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.52\lib\nanoFramework.TestFramework.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.UnitTestLauncher, Version=0.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.49\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.52\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/System.IO.HashingTests/packages.config b/Tests/System.IO.HashingTests/packages.config
index 30ae458..d6501bb 100644
--- a/Tests/System.IO.HashingTests/packages.config
+++ b/Tests/System.IO.HashingTests/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.15" targetFramework="netnano1.0" />
-  <package id="nanoFramework.TestFramework" version="4.0.0-preview.49" targetFramework="netnano1.0" developmentDependency="true" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" 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/System.IO.HashingTests/packages.lock.json b/Tests/System.IO.HashingTests/packages.lock.json
index d2be425..2f3091e 100644
--- a/Tests/System.IO.HashingTests/packages.lock.json
+++ b/Tests/System.IO.HashingTests/packages.lock.json
@@ -4,21 +4,21 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.43, 2.0.0-preview.43]",
-        "resolved": "2.0.0-preview.43",
-        "contentHash": "ijOdswxNI+zhN7MrRMjJPe7pAVhqARvpEOFKUKH6D18NUS3CCQ9+IoyVs3zJhmmBk53YmAErFAdCnAWLVxUu8Q=="
+        "requested": "[2.0.0-preview.49, 2.0.0-preview.49]",
+        "resolved": "2.0.0-preview.49",
+        "contentHash": "/8/fw1qqEql05aelTR9QQi4ZF2M+Mdwuemjf9rul8yaOpl6jjnhhKfdRJMh4+BXp5VjwTZsALJVpp2aN+e7vzw=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
-        "resolved": "2.0.0-preview.15",
-        "contentHash": "zhVxQ+zUBkDPhpU35xX9JT/H8bFjo0ylQRmX/45QtM3QJQRd7a327R1PfBhpU5o3kpx2V8AcOgZBM8UilKwQeA=="
+        "requested": "[2.0.0-preview.18, 2.0.0-preview.18]",
+        "resolved": "2.0.0-preview.18",
+        "contentHash": "ZnV49vaKgIzXN223aZ8Co3GZexDY+0d92QmOqfMdM/tzGIG2gnOy90UfAwQ3/n3Ea3a5RxNNgSxwxNGwsFgyMQ=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
-        "requested": "[4.0.0-preview.49, 4.0.0-preview.49]",
-        "resolved": "4.0.0-preview.49",
-        "contentHash": "9YYWJIV8o1LPHVmXiQWbfmIKIu/9Ioxw6qWGShpn7K9zX9hgEs7N3NmY+81Ku7rGssUSyKd3RCL2HvXFosRX2g=="
+        "requested": "[4.0.0-preview.52, 4.0.0-preview.52]",
+        "resolved": "4.0.0-preview.52",
+        "contentHash": "NnPJcRP41jr5pC8O5Zc29ozBAIm0PEXcj/vc/IjzWzsdNq1cpx8aRAoF3TW9cFEHdLu223tahoZyjFmALRSEoA=="
       }
     }
   }
diff --git a/nanoFramework.System.IO.Hashing.nuspec b/nanoFramework.System.IO.Hashing.nuspec
index ec65473..1b9122e 100644
--- a/nanoFramework.System.IO.Hashing.nuspec
+++ b/nanoFramework.System.IO.Hashing.nuspec
@@ -20,7 +20,7 @@ This package requires a target with nanoFramework.System.IO.Hashing v$nativeVers
     <tags>nanoFramework C# csharp netmf netnf </tags>
     <dependencies>
       <group targetFramework=".NETnanoFramework1.0">
-        <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" />
+        <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.49" />
       </group>
     </dependencies>
   </metadata>