diff --git a/src/RedHttpServer.Tests/RedHttpServer.Tests.csproj b/src/RedHttpServer.Tests/RedHttpServer.Tests.csproj
index f7671cb..ac3ebb0 100644
--- a/src/RedHttpServer.Tests/RedHttpServer.Tests.csproj
+++ b/src/RedHttpServer.Tests/RedHttpServer.Tests.csproj
@@ -9,7 +9,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="nunit" Version="3.12.0" />
+        <PackageReference Include="nunit" Version="3.13.1" />
         <PackageReference Include="NUnit3TestAdapter" Version="3.16.1" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     </ItemGroup>