diff --git a/docs/azure/sdk/snippets/unit-testing/UnitTestingSampleApp.csproj b/docs/azure/sdk/snippets/unit-testing/UnitTestingSampleApp.csproj
index 0bb89fd118c45..9e5922874e535 100644
--- a/docs/azure/sdk/snippets/unit-testing/UnitTestingSampleApp.csproj
+++ b/docs/azure/sdk/snippets/unit-testing/UnitTestingSampleApp.csproj
@@ -14,7 +14,7 @@
     <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.7.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="Moq" Version="[4.20.72]" /> <!-- Context: https://github.com/Azure/azure-sdk-for-net/issues/38111 -->
-    <PackageReference Include="NSubstitute" Version="5.1.0" />
+    <PackageReference Include="NSubstitute" Version="5.3.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>