diff --git a/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj b/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
index 89fc116..356efcc 100644
--- a/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
+++ b/Tests/UnitTestsSerialPort/UnitTestsSerialPort.nfproj
@@ -44,7 +44,7 @@
       <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.35\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Hardware.Esp32, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.Hardware.Esp32.2.0.0-preview.6\lib\nanoFramework.Hardware.Esp32.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.Hardware.Esp32.2.0.0-preview.7\lib\nanoFramework.Hardware.Esp32.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\..\packages\nanoFramework.Runtime.Events.2.0.0-preview.8\lib\nanoFramework.Runtime.Events.dll</HintPath>
diff --git a/Tests/UnitTestsSerialPort/packages.config b/Tests/UnitTestsSerialPort/packages.config
index 3d0c1a8..e1868d4 100644
--- a/Tests/UnitTestsSerialPort/packages.config
+++ b/Tests/UnitTestsSerialPort/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.35" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Hardware.Esp32" version="2.0.0-preview.6" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Hardware.Esp32" version="2.0.0-preview.7" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.8" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="2.0.0-preview.10" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.8" targetFramework="netnano1.0" />
diff --git a/Tests/UnitTestsSerialPort/packages.lock.json b/Tests/UnitTestsSerialPort/packages.lock.json
index 022193f..659329a 100644
--- a/Tests/UnitTestsSerialPort/packages.lock.json
+++ b/Tests/UnitTestsSerialPort/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.Hardware.Esp32": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.6, 2.0.0-preview.6]",
-        "resolved": "2.0.0-preview.6",
-        "contentHash": "UpV0LRx7vugv8tud0y4kSIkQdkZ5+rTsmgVemzJ/nXPwQl26TYRS8DA0E4X+NbxOiasL6gOaekmf3uWoig4rvQ=="
+        "requested": "[2.0.0-preview.7, 2.0.0-preview.7]",
+        "resolved": "2.0.0-preview.7",
+        "contentHash": "BT9zyKMyVjrTS3kbtPcZdVnjD8lvcWOKmPP5iwcBBt4OLn6ggCEi81pfz24Lj/qmV15kgE88CwkffpZwxm/EhA=="
       },
       "nanoFramework.Runtime.Events": {
         "type": "Direct",