diff --git a/src/EfCeeEmSharp.Board.Tests/EfCeeEmSharp.Board.Tests.csproj b/src/EfCeeEmSharp.Board.Tests/EfCeeEmSharp.Board.Tests.csproj
index 7e9224a..143eedc 100644
--- a/src/EfCeeEmSharp.Board.Tests/EfCeeEmSharp.Board.Tests.csproj
+++ b/src/EfCeeEmSharp.Board.Tests/EfCeeEmSharp.Board.Tests.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="MassTransit.TestFramework" Version="8.0.6" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
     <PackageReference Include="coverlet.collector" Version="3.1.2" />
   </ItemGroup>
diff --git a/src/EfCeeEmSharp.Client.Test/EfCeeEmSharp.Client.Test.csproj b/src/EfCeeEmSharp.Client.Test/EfCeeEmSharp.Client.Test.csproj
index f888846..f5addd0 100644
--- a/src/EfCeeEmSharp.Client.Test/EfCeeEmSharp.Client.Test.csproj
+++ b/src/EfCeeEmSharp.Client.Test/EfCeeEmSharp.Client.Test.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
     <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>