diff --git a/Tests/NFUnitTestEncoding/NFUnitTestEncoding.nfproj b/Tests/NFUnitTestEncoding/NFUnitTestEncoding.nfproj
index 6092e1a..e29e817 100644
--- a/Tests/NFUnitTestEncoding/NFUnitTestEncoding.nfproj
+++ b/Tests/NFUnitTestEncoding/NFUnitTestEncoding.nfproj
@@ -35,10 +35,10 @@
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-      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.TestFramework.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.49\lib\nanoFramework.TestFramework.dll</HintPath>
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     <Reference Include="nanoFramework.UnitTestLauncher, Version=0.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.49\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
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   <ItemGroup>
diff --git a/Tests/NFUnitTestEncoding/packages.config b/Tests/NFUnitTestEncoding/packages.config
index 8691514..b26279b 100644
--- a/Tests/NFUnitTestEncoding/packages.config
+++ b/Tests/NFUnitTestEncoding/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
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-  <package id="nanoFramework.TestFramework" version="4.0.0-preview.47" targetFramework="netnano1.0" developmentDependency="true" />
+  <package id="nanoFramework.TestFramework" version="4.0.0-preview.49" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/NFUnitTestEncoding/packages.lock.json b/Tests/NFUnitTestEncoding/packages.lock.json
index 5ee00c5..2dd3f26 100644
--- a/Tests/NFUnitTestEncoding/packages.lock.json
+++ b/Tests/NFUnitTestEncoding/packages.lock.json
@@ -10,9 +10,9 @@
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+        "requested": "[4.0.0-preview.49, 4.0.0-preview.49]",
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diff --git a/Tests/NFUnitTestStringBuilder/NFUnitTestStringBuilder.nfproj b/Tests/NFUnitTestStringBuilder/NFUnitTestStringBuilder.nfproj
index bf2f9ab..942d087 100644
--- a/Tests/NFUnitTestStringBuilder/NFUnitTestStringBuilder.nfproj
+++ b/Tests/NFUnitTestStringBuilder/NFUnitTestStringBuilder.nfproj
@@ -40,10 +40,10 @@
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-      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.TestFramework.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.49\lib\nanoFramework.TestFramework.dll</HintPath>
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     <Reference Include="nanoFramework.UnitTestLauncher, Version=0.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
+      <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.49\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/NFUnitTestStringBuilder/packages.config b/Tests/NFUnitTestStringBuilder/packages.config
index 8691514..b26279b 100644
--- a/Tests/NFUnitTestStringBuilder/packages.config
+++ b/Tests/NFUnitTestStringBuilder/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.TestFramework" version="4.0.0-preview.47" targetFramework="netnano1.0" developmentDependency="true" />
+  <package id="nanoFramework.TestFramework" version="4.0.0-preview.49" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/NFUnitTestStringBuilder/packages.lock.json b/Tests/NFUnitTestStringBuilder/packages.lock.json
index 5ee00c5..2dd3f26 100644
--- a/Tests/NFUnitTestStringBuilder/packages.lock.json
+++ b/Tests/NFUnitTestStringBuilder/packages.lock.json
@@ -10,9 +10,9 @@
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-        "resolved": "4.0.0-preview.47",
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+        "requested": "[4.0.0-preview.49, 4.0.0-preview.49]",
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diff --git a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
index f480843..c91cc8a 100644
--- a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
+++ b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
@@ -45,7 +45,7 @@
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-      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.42\lib\System.Diagnostics.Stopwatch.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.46\lib\System.Diagnostics.Stopwatch.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/nanoFramework.System.Text.Benchmark/packages.config b/nanoFramework.System.Text.Benchmark/packages.config
index 8275e0f..265a6dc 100644
--- a/nanoFramework.System.Text.Benchmark/packages.config
+++ b/nanoFramework.System.Text.Benchmark/packages.config
@@ -5,6 +5,6 @@
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-  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.42" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.46" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.15" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.System.Text.Benchmark/packages.lock.json b/nanoFramework.System.Text.Benchmark/packages.lock.json
index 5835f42..9a8bfd8 100644
--- a/nanoFramework.System.Text.Benchmark/packages.lock.json
+++ b/nanoFramework.System.Text.Benchmark/packages.lock.json
@@ -34,9 +34,9 @@
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