diff --git a/System.IO.Ports/System.IO.Ports.nfproj b/System.IO.Ports/System.IO.Ports.nfproj
index 31c7e56..a8e807b 100644
--- a/System.IO.Ports/System.IO.Ports.nfproj
+++ b/System.IO.Ports/System.IO.Ports.nfproj
@@ -67,10 +67,10 @@
       <HintPath>..\packages\nanoFramework.Runtime.Events.2.0.0-preview.11\lib\netnano1.0\nanoFramework.Runtime.Events.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.IO.Streams, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.13\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.15\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/System.IO.Ports/packages.config b/System.IO.Ports/packages.config
index d7319d3..4793963 100644
--- a/System.IO.Ports/packages.config
+++ b/System.IO.Ports/packages.config
@@ -2,8 +2,8 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.11" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" 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.IO.Streams" version="2.0.0-preview.15" 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" />
   <package id="StyleCop.MSBuild" version="6.2.0" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/System.IO.Ports/packages.lock.json b/System.IO.Ports/packages.lock.json
index d5da000..3bacdde 100644
--- a/System.IO.Ports/packages.lock.json
+++ b/System.IO.Ports/packages.lock.json
@@ -16,15 +16,15 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "TQLs+6/JdXhhK+pkvx9/iVnHLhTJ2oo7XBusC73lspLbeWlIzGRwrA9ZyQejdXh44URE05neaimJey786hhZlA=="
+        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
+        "resolved": "2.0.0-preview.15",
+        "contentHash": "VjdWLxapAF4hEr0vtJPAFEOY1xT9TyQlAB9wyRfcYmvoHiBIQWB0krgpw0yvC2C1AOLgE9op3HpsFbzrVRw3EA=="
       },
       "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",
diff --git a/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj b/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
index 41e2e23..e78561a 100644
--- a/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
+++ b/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
@@ -50,7 +50,7 @@
       <HintPath>..\..\packages\nanoFramework.Runtime.Events.2.0.0-preview.11\lib\netnano1.0\nanoFramework.Runtime.Events.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="nanoFramework.TestFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.TestFramework.dll</HintPath>
@@ -59,7 +59,7 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
     </Reference>
     <Reference Include="System.IO.Streams, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.13\lib\netnano1.0\System.IO.Streams.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.IO.Streams.2.0.0-preview.15\lib\netnano1.0\System.IO.Streams.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/UnitTestsSerialPort/packages.config b/Tests/UnitTestsSerialPort/packages.config
index 1be6cbc..0cb3904 100644
--- a/Tests/UnitTestsSerialPort/packages.config
+++ b/Tests/UnitTestsSerialPort/packages.config
@@ -3,7 +3,7 @@
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" targetFramework="netnano1.0" />
   <package id="nanoFramework.Hardware.Esp32" version="2.0.0-preview.9" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.11" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.Streams" 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.IO.Streams" version="2.0.0-preview.15" 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.47" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/UnitTestsSerialPort/packages.lock.json b/Tests/UnitTestsSerialPort/packages.lock.json
index 9006bf5..bd4b8fa 100644
--- a/Tests/UnitTestsSerialPort/packages.lock.json
+++ b/Tests/UnitTestsSerialPort/packages.lock.json
@@ -22,15 +22,15 @@
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
-        "resolved": "2.0.0-preview.13",
-        "contentHash": "TQLs+6/JdXhhK+pkvx9/iVnHLhTJ2oo7XBusC73lspLbeWlIzGRwrA9ZyQejdXh44URE05neaimJey786hhZlA=="
+        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
+        "resolved": "2.0.0-preview.15",
+        "contentHash": "VjdWLxapAF4hEr0vtJPAFEOY1xT9TyQlAB9wyRfcYmvoHiBIQWB0krgpw0yvC2C1AOLgE9op3HpsFbzrVRw3EA=="
       },
       "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=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.IO.Ports.nuspec b/nanoFramework.System.IO.Ports.nuspec
index 8ed8bd8..ef9cee3 100644
--- a/nanoFramework.System.IO.Ports.nuspec
+++ b/nanoFramework.System.IO.Ports.nuspec
@@ -22,7 +22,7 @@ This package requires a target with System.IO.Ports v$nativeVersion$ (checksum $
       <group targetFramework=".NETnanoFramework1.0">
         <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.43" />
         <dependency id="nanoFramework.Runtime.Events" version="2.0.0-preview.11" />
-        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.13" />
+        <dependency id="nanoFramework.System.IO.Streams" version="2.0.0-preview.15" />
       </group>
     </dependencies>
   </metadata>