diff --git a/SerialPortRx/SerialPortRx.csproj b/SerialPortRx/SerialPortRx.csproj
index 8932a4a..fab64e4 100644
--- a/SerialPortRx/SerialPortRx.csproj
+++ b/SerialPortRx/SerialPortRx.csproj
@@ -2,7 +2,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Reactive" Version="5.0.0" />
-    <PackageReference Include="System.IO.Ports" Version="6.0.0" />
+    <PackageReference Include="System.IO.Ports" Version="7.0.0" />
   </ItemGroup>
 
   <ItemGroup>