diff --git a/TemperatureSensorArduinoReader/TemperatureSensorArduinoReader.csproj b/TemperatureSensorArduinoReader/TemperatureSensorArduinoReader.csproj
index ca3825a..96f741a 100644
--- a/TemperatureSensorArduinoReader/TemperatureSensorArduinoReader.csproj
+++ b/TemperatureSensorArduinoReader/TemperatureSensorArduinoReader.csproj
@@ -20,7 +20,7 @@
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.2" />
     <PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
     <PackageReference Include="Serilog.Sinks.Grafana.Loki" Version="9.0.0" />
-    <PackageReference Include="System.IO.Ports" Version="10.0.8" />
+    <PackageReference Include="System.IO.Ports" Version="10.0.9" />
   </ItemGroup>
 
   <ItemGroup>