diff --git a/EchoServerTests/EchoServerTests.csproj b/EchoServerTests/EchoServerTests.csproj
index 427fe94..5cb270f 100644
--- a/EchoServerTests/EchoServerTests.csproj
+++ b/EchoServerTests/EchoServerTests.csproj
@@ -17,7 +17,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.4.0" />
     <PackageReference Include="NUnit.Analyzers" Version="3.9.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
diff --git a/NetSdrClientAppTests/NetSdrClientAppTests.csproj b/NetSdrClientAppTests/NetSdrClientAppTests.csproj
index 29ca8bd..aa31ea8 100644
--- a/NetSdrClientAppTests/NetSdrClientAppTests.csproj
+++ b/NetSdrClientAppTests/NetSdrClientAppTests.csproj
@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="NetArchTest.Rules" Version="1.3.2" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.4.0" />
     <PackageReference Include="NUnit.Analyzers" Version="3.9.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>