diff --git a/chapters/ch01-test-doubles/Ch01.TestDoubles.csproj b/chapters/ch01-test-doubles/Ch01.TestDoubles.csproj
index 02aaa03..b82e83f 100644
--- a/chapters/ch01-test-doubles/Ch01.TestDoubles.csproj
+++ b/chapters/ch01-test-doubles/Ch01.TestDoubles.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="NSubstitute" Version="6.0.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/chapters/ch02-mutation-testing/Ch02.MutationTesting.csproj b/chapters/ch02-mutation-testing/Ch02.MutationTesting.csproj
index f4409c6..c33fc75 100644
--- a/chapters/ch02-mutation-testing/Ch02.MutationTesting.csproj
+++ b/chapters/ch02-mutation-testing/Ch02.MutationTesting.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/chapters/ch03-property-based/Ch03.PropertyBased.csproj b/chapters/ch03-property-based/Ch03.PropertyBased.csproj
index c1f219e..506844a 100644
--- a/chapters/ch03-property-based/Ch03.PropertyBased.csproj
+++ b/chapters/ch03-property-based/Ch03.PropertyBased.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="FsCheck.Xunit" Version="3.3.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/chapters/ch04-architecture/Ch04.ArchitectureTests.csproj b/chapters/ch04-architecture/Ch04.ArchitectureTests.csproj
index 7d2f241..92ead04 100644
--- a/chapters/ch04-architecture/Ch04.ArchitectureTests.csproj
+++ b/chapters/ch04-architecture/Ch04.ArchitectureTests.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/chapters/ch05-integration/Ch05.IntegrationPatterns.csproj b/chapters/ch05-integration/Ch05.IntegrationPatterns.csproj
index 9aba60d..6f4a920 100644
--- a/chapters/ch05-integration/Ch05.IntegrationPatterns.csproj
+++ b/chapters/ch05-integration/Ch05.IntegrationPatterns.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="Respawn" Version="7.0.0" />
     <PackageReference Include="Testcontainers.PostgreSql" Version="4.13.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>