diff --git a/src/ARI.Tests/ARI.Tests.csproj b/src/ARI.Tests/ARI.Tests.csproj
index 8685b16..5ffa5bc 100644
--- a/src/ARI.Tests/ARI.Tests.csproj
+++ b/src/ARI.Tests/ARI.Tests.csproj
@@ -72,7 +72,7 @@
     <PackageReference Include="Verify.NUnit" Version="31.28.0" />
     <PackageReference Include="Devlead.Testing.MockHttp" Version="2026.7.15.880" />
     <PackageReference Include="Cake.Testing" Version="6.2.0" />
-    <PackageReference Include="NSubstitute" Version="6.0.0" />
+    <PackageReference Include="NSubstitute" Version="6.1.0" />
   </ItemGroup>
 
   <ItemGroup>