diff --git a/ApiDoctor.Console.UnitTests/ApiDoctor.Console.UnitTests.csproj b/ApiDoctor.Console.UnitTests/ApiDoctor.Console.UnitTests.csproj
index 46e0ead9..5e2ad68b 100644
--- a/ApiDoctor.Console.UnitTests/ApiDoctor.Console.UnitTests.csproj
+++ b/ApiDoctor.Console.UnitTests/ApiDoctor.Console.UnitTests.csproj
@@ -23,7 +23,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="NUnit" Version="4.2.2" />
+    <PackageReference Include="NUnit" Version="4.5.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>
diff --git a/ApiDoctor.DocumentationGeneration.UnitTests/ApiDoctor.DocumentationGeneration.UnitTests.csproj b/ApiDoctor.DocumentationGeneration.UnitTests/ApiDoctor.DocumentationGeneration.UnitTests.csproj
index 5ddd7faa..9ceae1a1 100644
--- a/ApiDoctor.DocumentationGeneration.UnitTests/ApiDoctor.DocumentationGeneration.UnitTests.csproj
+++ b/ApiDoctor.DocumentationGeneration.UnitTests/ApiDoctor.DocumentationGeneration.UnitTests.csproj
@@ -24,7 +24,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="NUnit" Version="4.2.2" />
+    <PackageReference Include="NUnit" Version="4.5.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>
diff --git a/ApiDoctor.Validation.UnitTests/ApiDoctor.Validation.UnitTests.csproj b/ApiDoctor.Validation.UnitTests/ApiDoctor.Validation.UnitTests.csproj
index ddffdede..18ed243f 100644
--- a/ApiDoctor.Validation.UnitTests/ApiDoctor.Validation.UnitTests.csproj
+++ b/ApiDoctor.Validation.UnitTests/ApiDoctor.Validation.UnitTests.csproj
@@ -41,7 +41,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="NUnit" Version="4.2.2" />
+    <PackageReference Include="NUnit" Version="4.5.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>