diff --git a/MSTest_browserstack/MSTest_browserstack.csproj b/MSTest_browserstack/MSTest_browserstack.csproj
index 63a61ee..04fcbf8 100644
--- a/MSTest_browserstack/MSTest_browserstack.csproj
+++ b/MSTest_browserstack/MSTest_browserstack.csproj
@@ -16,6 +16,9 @@
     <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
     <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
     <PackageReference Include="Selenium.WebDriver" Version="4.17.0" />
+    <!-- Security pins: override vulnerable transitive 4.3.0 (via NETStandard.Library 1.6.1). APS-19255 / APS-19256 -->
+    <PackageReference Include="System.Net.Http" Version="4.3.4" />
+    <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
   </ItemGroup>
 
   <ItemGroup>