diff --git a/S7.Net.UnitTest/S7.Net.UnitTest.csproj b/S7.Net.UnitTest/S7.Net.UnitTest.csproj
index eb63e48..2f93284 100644
--- a/S7.Net.UnitTest/S7.Net.UnitTest.csproj
+++ b/S7.Net.UnitTest/S7.Net.UnitTest.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net452;netcoreapp3.1;net5.0</TargetFrameworks>
+    <TargetFrameworks>net462;net6.0</TargetFrameworks>
 
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>Properties\S7.Net.snk</AssemblyOriginatorKeyFile>