diff --git a/Tests/Client/TestClient.nfproj b/Tests/Client/TestClient.nfproj
index 8ae1a8a..6316078 100644
--- a/Tests/Client/TestClient.nfproj
+++ b/Tests/Client/TestClient.nfproj
@@ -34,8 +34,8 @@
     <Reference Include="nanoFramework.Runtime.Native, Version=1.7.7.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.Runtime.Native.1.7.7\lib\nanoFramework.Runtime.Native.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Text, Version=1.3.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Text.1.3.1\lib\nanoFramework.System.Text.dll</HintPath>
+    <Reference Include="nanoFramework.System.Text, Version=1.3.9.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Text.1.3.9\lib\nanoFramework.System.Text.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Tests/Client/packages.config b/Tests/Client/packages.config
index 2c458bf..2611c5a 100644
--- a/Tests/Client/packages.config
+++ b/Tests/Client/packages.config
@@ -3,5 +3,5 @@
   <package id="nanoFramework.CoreLibrary" version="1.16.1" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="1.11.26" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="1.7.7" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="1.3.1" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="1.3.9" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/Tests/Client/packages.lock.json b/Tests/Client/packages.lock.json
index 709c8e1..18badd6 100644
--- a/Tests/Client/packages.lock.json
+++ b/Tests/Client/packages.lock.json
@@ -22,9 +22,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[1.3.1, 1.3.1]",
-        "resolved": "1.3.1",
-        "contentHash": "6BFCg7LUeN0Xx1R4QQF6HKDb3BnihtYY7X47IIkfFmsIurJbu643HyidhTxG/BwK4UYWRMC/Io4s/KdsLs6WlA=="
+        "requested": "[1.3.9, 1.3.9]",
+        "resolved": "1.3.9",
+        "contentHash": "IVQ+Hsu6KqFzvFC13cjAA4/J/1wi44Xa7GOu4R47v24HogsXKKus6Pn4icR2pffpLoythCVgX8L1qSiqTuPOEg=="
       }
     }
   }
diff --git a/Tests/NFUnitTest1/NFUnitTest1.nfproj b/Tests/NFUnitTest1/NFUnitTest1.nfproj
index 626d635..c256f7d 100644
--- a/Tests/NFUnitTest1/NFUnitTest1.nfproj
+++ b/Tests/NFUnitTest1/NFUnitTest1.nfproj
@@ -37,8 +37,8 @@
     <Reference Include="mscorlib, Version=1.16.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.16.1\lib\mscorlib.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Text, Version=1.3.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Text.1.3.1\lib\nanoFramework.System.Text.dll</HintPath>
+    <Reference Include="nanoFramework.System.Text, Version=1.3.9.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.System.Text.1.3.9\lib\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework, Version=3.0.57.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.TestFramework.3.0.57\lib\nanoFramework.TestFramework.dll</HintPath>
diff --git a/Tests/NFUnitTest1/packages.config b/Tests/NFUnitTest1/packages.config
index 02154c7..c0d6543 100644
--- a/Tests/NFUnitTest1/packages.config
+++ b/Tests/NFUnitTest1/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.16.1" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="1.3.1" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="1.3.9" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="3.0.57" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/NFUnitTest1/packages.lock.json b/Tests/NFUnitTest1/packages.lock.json
index 7958cde..168500f 100644
--- a/Tests/NFUnitTest1/packages.lock.json
+++ b/Tests/NFUnitTest1/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[1.3.1, 1.3.1]",
-        "resolved": "1.3.1",
-        "contentHash": "6BFCg7LUeN0Xx1R4QQF6HKDb3BnihtYY7X47IIkfFmsIurJbu643HyidhTxG/BwK4UYWRMC/Io4s/KdsLs6WlA=="
+        "requested": "[1.3.9, 1.3.9]",
+        "resolved": "1.3.9",
+        "contentHash": "IVQ+Hsu6KqFzvFC13cjAA4/J/1wi44Xa7GOu4R47v24HogsXKKus6Pn4icR2pffpLoythCVgX8L1qSiqTuPOEg=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.Device.Bluetooth.nuspec b/nanoFramework.Device.Bluetooth.nuspec
index 638c004..206de24 100644
--- a/nanoFramework.Device.Bluetooth.nuspec
+++ b/nanoFramework.Device.Bluetooth.nuspec
@@ -22,7 +22,7 @@ This package requires a target with nanoFramework.Device.Bluetooth v$nativeVersi
       <dependency id="nanoFramework.CoreLibrary" version="1.16.1" />
       <dependency id="nanoFramework.Runtime.Native" version="1.7.7" />
       <dependency id="nanoFramework.Runtime.Events" version="1.11.26" />
-      <dependency id="nanoFramework.System.Text" version="1.3.1" />
+      <dependency id="nanoFramework.System.Text" version="1.3.9" />
       <dependency id="nanoFramework.System.Collections" version="1.5.56" />
     </dependencies>
   </metadata>
diff --git a/nanoFramework.Device.Bluetooth/nanoFramework.Device.Bluetooth.nfproj b/nanoFramework.Device.Bluetooth/nanoFramework.Device.Bluetooth.nfproj
index 011189a..d5dbcde 100644
--- a/nanoFramework.Device.Bluetooth/nanoFramework.Device.Bluetooth.nfproj
+++ b/nanoFramework.Device.Bluetooth/nanoFramework.Device.Bluetooth.nfproj
@@ -149,8 +149,8 @@
     <Reference Include="nanoFramework.System.Collections, Version=1.5.56.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.Collections.1.5.56\lib\nanoFramework.System.Collections.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Text, Version=1.3.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.1.3.1\lib\nanoFramework.System.Text.dll</HintPath>
+    <Reference Include="nanoFramework.System.Text, Version=1.3.9.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Text.1.3.9\lib\nanoFramework.System.Text.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/nanoFramework.Device.Bluetooth/packages.config b/nanoFramework.Device.Bluetooth/packages.config
index 9000cb7..72b89a2 100644
--- a/nanoFramework.Device.Bluetooth/packages.config
+++ b/nanoFramework.Device.Bluetooth/packages.config
@@ -4,6 +4,6 @@
   <package id="nanoFramework.Runtime.Events" version="1.11.26" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="1.7.7" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Collections" version="1.5.56" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="1.3.1" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="1.3.9" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.7.115" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.Device.Bluetooth/packages.lock.json b/nanoFramework.Device.Bluetooth/packages.lock.json
index 2839632..004fa95 100644
--- a/nanoFramework.Device.Bluetooth/packages.lock.json
+++ b/nanoFramework.Device.Bluetooth/packages.lock.json
@@ -28,9 +28,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[1.3.1, 1.3.1]",
-        "resolved": "1.3.1",
-        "contentHash": "6BFCg7LUeN0Xx1R4QQF6HKDb3BnihtYY7X47IIkfFmsIurJbu643HyidhTxG/BwK4UYWRMC/Io4s/KdsLs6WlA=="
+        "requested": "[1.3.9, 1.3.9]",
+        "resolved": "1.3.9",
+        "contentHash": "IVQ+Hsu6KqFzvFC13cjAA4/J/1wi44Xa7GOu4R47v24HogsXKKus6Pn4icR2pffpLoythCVgX8L1qSiqTuPOEg=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",