diff --git a/nanoFramework.System.Text.RegularExpression.Benchmark/nanoFramework.System.Text.RegularExpression.Benchmark.nfproj b/nanoFramework.System.Text.RegularExpression.Benchmark/nanoFramework.System.Text.RegularExpression.Benchmark.nfproj
index 46fe4a4..d2ba82a 100644
--- a/nanoFramework.System.Text.RegularExpression.Benchmark/nanoFramework.System.Text.RegularExpression.Benchmark.nfproj
+++ b/nanoFramework.System.Text.RegularExpression.Benchmark/nanoFramework.System.Text.RegularExpression.Benchmark.nfproj
@@ -39,7 +39,7 @@
       <HintPath>..\packages\nanoFramework.Benchmark.1.0.113\lib\nanoFramework.Benchmark.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Logging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Logging.2.0.0-preview.5\lib\netnano1.0\nanoFramework.Logging.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Logging.2.0.0-preview.7\lib\netnano1.0\nanoFramework.Logging.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Native, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.22\lib\netnano1.0\nanoFramework.Runtime.Native.dll</HintPath>
@@ -48,10 +48,10 @@
       <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.13\lib\netnano1.0\nanoFramework.System.Collections.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.13\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.15\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="System.Diagnostics.Stopwatch, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.34\lib\System.Diagnostics.Stopwatch.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.42\lib\System.Diagnostics.Stopwatch.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/nanoFramework.System.Text.RegularExpression.Benchmark/packages.config b/nanoFramework.System.Text.RegularExpression.Benchmark/packages.config
index 1f1650c..de6a030 100644
--- a/nanoFramework.System.Text.RegularExpression.Benchmark/packages.config
+++ b/nanoFramework.System.Text.RegularExpression.Benchmark/packages.config
@@ -2,9 +2,9 @@
 <packages>
   <package id="nanoFramework.Benchmark" version="1.0.113" targetFramework="netnano1.0" />
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Logging" version="2.0.0-preview.5" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Logging" version="2.0.0-preview.7" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.22" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Collections" version="2.0.0-preview.13" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.34" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.13" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.42" 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.RegularExpression.Benchmark/packages.lock.json b/nanoFramework.System.Text.RegularExpression.Benchmark/packages.lock.json
index 238ec1e..0684d28 100644
--- a/nanoFramework.System.Text.RegularExpression.Benchmark/packages.lock.json
+++ b/nanoFramework.System.Text.RegularExpression.Benchmark/packages.lock.json
@@ -16,9 +16,9 @@
       },
       "nanoFramework.Logging": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.5, 2.0.0-preview.5]",
-        "resolved": "2.0.0-preview.5",
-        "contentHash": "o1jLriHKN9bQNiLiPJ5WkJzN6fu5M18WXfq2UOEKROneWmaHgGm2d62Np/bfzO/KiMm38yNpjFGS2WbmhkJ/9w=="
+        "requested": "[2.0.0-preview.7, 2.0.0-preview.7]",
+        "resolved": "2.0.0-preview.7",
+        "contentHash": "7KtjyeUYteDTCSwbfB6wd81P/EI/cpa5d5kMS5e8qonmu1p8iRRqmSmpt0b6v+29mjEddxaw51lxFjJ63QxDMw=="
       },
       "nanoFramework.Runtime.Native": {
         "type": "Direct",
@@ -34,15 +34,15 @@
       },
       "nanoFramework.System.Diagnostics.Stopwatch": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.34, 2.0.0-preview.34]",
-        "resolved": "2.0.0-preview.34",
-        "contentHash": "wOO2mS6Jle7KS5rg6+LRQBUNVSHWVCmvXDIaVQ3C5XH/qPUyyWwsg6oDql8wNJQUsit3N15ogt8ffX08hsa82g=="
+        "requested": "[2.0.0-preview.42, 2.0.0-preview.42]",
+        "resolved": "2.0.0-preview.42",
+        "contentHash": "qmLlBSyoPYTDXIoxDccAmHNYDuUwsTrFPnSEx64iuyCXwLeNBt5N1ywiNWkya2qHFEJCLmIirMlGAVPh6Yrmag=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "kTEKvplebAWeA7j4jb9adST6dxH28Q6c99+Jms6p8cMFxlrUoWhL/GdEiPaPnJSVy1XtsgIfh38WbR757qF8yw=="
+        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
+        "resolved": "2.0.0-preview.15",
+        "contentHash": "zhVxQ+zUBkDPhpU35xX9JT/H8bFjo0ylQRmX/45QtM3QJQRd7a327R1PfBhpU5o3kpx2V8AcOgZBM8UilKwQeA=="
       }
     }
   }
diff --git a/nanoFramework.System.Text.RegularExpressions.nuspec b/nanoFramework.System.Text.RegularExpressions.nuspec
index 60bde78..3efb89c 100644
--- a/nanoFramework.System.Text.RegularExpressions.nuspec
+++ b/nanoFramework.System.Text.RegularExpressions.nuspec
@@ -21,7 +21,7 @@
       <group targetFramework=".NETnanoFramework1.0">
         <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" />
         <dependency id="nanoFramework.System.Collections" version="2.0.0-preview.13" />
-        <dependency id="nanoFramework.System.Text" version="2.0.0-preview.13" />
+        <dependency id="nanoFramework.System.Text" version="2.0.0-preview.15" />
       </group>
     </dependencies>
   </metadata>
diff --git a/nanoFramework.System.Text.RegularExpressions/nanoFramework.System.text.RegularExpressions.nfproj b/nanoFramework.System.Text.RegularExpressions/nanoFramework.System.text.RegularExpressions.nfproj
index c7b5add..8eafc4e 100644
--- a/nanoFramework.System.Text.RegularExpressions/nanoFramework.System.text.RegularExpressions.nfproj
+++ b/nanoFramework.System.Text.RegularExpressions/nanoFramework.System.text.RegularExpressions.nfproj
@@ -67,7 +67,7 @@
       <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.13\lib\netnano1.0\nanoFramework.System.Collections.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.13\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.15\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/nanoFramework.System.Text.RegularExpressions/packages.config b/nanoFramework.System.Text.RegularExpressions/packages.config
index ee8bdf3..c936088 100644
--- a/nanoFramework.System.Text.RegularExpressions/packages.config
+++ b/nanoFramework.System.Text.RegularExpressions/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Collections" version="2.0.0-preview.13" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.13" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.15" 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/nanoFramework.System.Text.RegularExpressions/packages.lock.json b/nanoFramework.System.Text.RegularExpressions/packages.lock.json
index 91b5f2b..0899d64 100644
--- a/nanoFramework.System.Text.RegularExpressions/packages.lock.json
+++ b/nanoFramework.System.Text.RegularExpressions/packages.lock.json
@@ -16,9 +16,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "kTEKvplebAWeA7j4jb9adST6dxH28Q6c99+Jms6p8cMFxlrUoWhL/GdEiPaPnJSVy1XtsgIfh38WbR757qF8yw=="
+        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
+        "resolved": "2.0.0-preview.15",
+        "contentHash": "zhVxQ+zUBkDPhpU35xX9JT/H8bFjo0ylQRmX/45QtM3QJQRd7a327R1PfBhpU5o3kpx2V8AcOgZBM8UilKwQeA=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",