diff --git a/test/Pose.Tests/IL/MethodRewriterTests.cs b/test/Pose.Tests/IL/MethodRewriterTests.cs
index 6b21268..130d5e9 100644
--- a/test/Pose.Tests/IL/MethodRewriterTests.cs
+++ b/test/Pose.Tests/IL/MethodRewriterTests.cs
@@ -35,15 +35,16 @@ public void Can_rewrite_static_method()
         public void Cannot_rewrite_method_in_CoreLib()
         {
             // Arrange
-            var methodInfo = typeof(DateTime).GetMethod("get_UtcNow");
+            var methodInfo = typeof(Exception).GetMethod("get_Message");
             var methodRewriter = MethodRewriter.CreateRewriter(methodInfo, false);
 
             // Act
             var dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
-            var func = dynamicMethod.CreateDelegate(typeof(Func<DateTime>));
+            var func = dynamicMethod.CreateDelegate(typeof(Func<Exception, string>));
 
             // Assert
-            func.DynamicInvoke().As<DateTime>().Should().BeCloseTo(DateTime.UtcNow, TimeSpan.FromSeconds(10));
+            var exception = new Exception();
+            func.DynamicInvoke(exception).As<string>().Should().BeEquivalentTo(exception.Message);
         }
 
         [Fact]
diff --git a/test/Pose.Tests/Pose.Tests.csproj b/test/Pose.Tests/Pose.Tests.csproj
index f937604..44e82ea 100644
--- a/test/Pose.Tests/Pose.Tests.csproj
+++ b/test/Pose.Tests/Pose.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.0;netcoreapp3.0;net47;net48;net8.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.0;netcoreapp3.0;net47;net48;net6.0;net8.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>