diff --git a/EchoServerTests/EchoServerTests.csproj b/EchoServerTests/EchoServerTests.csproj
index e7f8c76..19b7fc6 100644
--- a/EchoServerTests/EchoServerTests.csproj
+++ b/EchoServerTests/EchoServerTests.csproj
@@ -18,8 +18,8 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="NUnit" Version="4.4.0" />
-    <PackageReference Include="NUnit.Analyzers" Version="4.11.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.9.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
   </ItemGroup>
 
   <ItemGroup>