diff --git a/README.md b/README.md
index 993080856..71281d07b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # EssentialCSharp
-[![Build and Test v9.0](https://github.com/IntelliTect/EssentialCSharp/actions/workflows/Branch%20v9.0.yml/badge.svg)](https://github.com/IntelliTect/EssentialCSharp/actions/workflows/Branch%20v9.0.yml)
+[![Build and Test v9.0](https://github.com/IntelliTect/EssentialCSharp/actions/workflows/Branch%20v9.0.yml/badge.svg?branch=v9.0&event=push)](https://github.com/IntelliTect/EssentialCSharp/actions/workflows/Branch%20v9.0.yml)
 
 This project contains the source code for the book **Essential C#** by Mark Michaelis (Addison-Wesley).
 
diff --git a/src/Chapter03.Tests/Chapter03.Tests.csproj b/src/Chapter03.Tests/Chapter03.Tests.csproj
index ce049bb6b..3a2d5b05d 100644
--- a/src/Chapter03.Tests/Chapter03.Tests.csproj
+++ b/src/Chapter03.Tests/Chapter03.Tests.csproj
@@ -7,8 +7,8 @@
     <Compile Include="..\Shared\CompilerAssert.cs" Link="CompilerAssert.cs" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.0.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Scripting.Common" Version="4.0.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.2.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Scripting.Common" Version="4.2.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Chapter03\Chapter03.csproj" />
diff --git a/src/Chapter03.Tests/Listing03.02.DereferencingAnUnassignedVariable.Tests.cs b/src/Chapter03.Tests/Listing03.02.DereferencingAnUnassignedVariable.Tests.cs
index 78ca8a3d2..c9e3c2fad 100644
--- a/src/Chapter03.Tests/Listing03.02.DereferencingAnUnassignedVariable.Tests.cs
+++ b/src/Chapter03.Tests/Listing03.02.DereferencingAnUnassignedVariable.Tests.cs
@@ -14,9 +14,9 @@ public class UppercaseTests
         [TestMethod]
         async public Task UnassignedVariableThrowsError()
         {
-            CompileError[] compileErrors = await CompilerAssert.ExpectErrorsInFileAsync(
+            _ = await CompilerAssert.ExpectErrorsInFileAsync(
                 "Listing03.02.DereferencingAnUnassignedVariable.cs",
-                new CompileError("CS0165: Use of unassigned local variable 'text'"));
+                new CompileError("CS0165", "Use of unassigned local variable 'text'"));
         }
     }
 }
diff --git a/src/Shared/CompilerAssert.cs b/src/Shared/CompilerAssert.cs
index 8cd360daf..2710ea5c4 100644
--- a/src/Shared/CompilerAssert.cs
+++ b/src/Shared/CompilerAssert.cs
@@ -105,16 +105,10 @@ async static public Task<CompileError[]> ExpectErrorsAsync(
                     for (int i = 0; i < actualCompileErrors.Length; i++)
                     {
                         // Compare Id's first as that is more meaningful.
-                        Assert.AreEqual<string>(diagnostics[i].Message, actualCompileErrors[i].Message,
-                            $"The expected Messages do not match for item {i}: " +
-                            $"{diagnostics[i].Message} <> {diagnostics[i].Message}");
                         Assert.AreEqual<string>(diagnostics[i].Id, actualCompileErrors[i].Id,
                             $"The expected Ids do not match for item {i}: " +
-                            $"{diagnostics[i].Id} <> {actualCompileErrors[i].Id}");
+                            $"{diagnostics[i].Id}: {diagnostics[i].Message} <> {actualCompileErrors[i].Id}: {actualCompileErrors[i].Message}");
                     }
-                    //CollectionAssert.AreEquivalent(
-                    //    diagnostics, 
-                    //    actualCompileErrors.ToList());
                 }
                 return actualCompileErrors;
             }