diff --git a/test/test.csproj b/test/test.csproj
index 8591077..3aeea7a 100644
--- a/test/test.csproj
+++ b/test/test.csproj
@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
-    <PackageReference Include="NUnit" Version="3.12.0" />
+    <PackageReference Include="NUnit" Version="3.13.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
   </ItemGroup>
   <ItemGroup>