diff --git a/ClientLibrary.Test/ClientLibrary.Test.csproj b/ClientLibrary.Test/ClientLibrary.Test.csproj
index 8777b7c..0cb7b7f 100644
--- a/ClientLibrary.Test/ClientLibrary.Test.csproj
+++ b/ClientLibrary.Test/ClientLibrary.Test.csproj
@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="NSubstitute" Version="5.0.0" />
+    <PackageReference Include="NSubstitute" Version="5.1.0" />
     <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>