diff --git a/src/NVika.Tests/NVika.Tests.csproj b/src/NVika.Tests/NVika.Tests.csproj
index cb6657c..8926aaa 100644
--- a/src/NVika.Tests/NVika.Tests.csproj
+++ b/src/NVika.Tests/NVika.Tests.csproj
@@ -38,7 +38,7 @@
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     </PackageReference>
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-    <PackageReference Include="NSubstitute" Version="5.0.0" />
+    <PackageReference Include="NSubstitute" Version="5.1.0" />
     <PackageReference Include="Serilog.Sinks.TextWriter" Version="2.1.0" />
     <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="19.2.69" />
     <PackageReference Include="xunit" Version="2.5.0" />