diff --git a/Harmonia.Tests/Harmonia.Tests.csproj b/Harmonia.Tests/Harmonia.Tests.csproj
index 6971975..6470c5e 100644
--- a/Harmonia.Tests/Harmonia.Tests.csproj
+++ b/Harmonia.Tests/Harmonia.Tests.csproj
@@ -17,7 +17,7 @@
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 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
-		<PackageReference Include="NSubstitute" Version="6.0.0" />
+		<PackageReference Include="NSubstitute" Version="6.1.0" />
 		<PackageReference Include="Shouldly" Version="4.3.0" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
 			<PrivateAssets>all</PrivateAssets>