diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml b/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml
index 630046f2d8..dbf8b0986f 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml
@@ -12,6 +12,7 @@
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css"
               asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
               asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute"
+              crossorigin="anonymous"
               integrity="sha256-eSi1q2PG6J7g7ib17yAaWMcrr5GrtohYChqibrV7PBE="/>
     </environment>
     <link rel="stylesheet" href="~/css/site.css" />
diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml
index 50efa44a39..11e351ad43 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml
@@ -12,6 +12,7 @@
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css"
               asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
               asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute"
+              crossorigin="anonymous"
               integrity="sha256-eSi1q2PG6J7g7ib17yAaWMcrr5GrtohYChqibrV7PBE="/>
     </environment>
     <link rel="stylesheet" href="~/css/site.css" />
diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/Views/Shared/_Layout.cshtml b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/Views/Shared/_Layout.cshtml
index 36f0469f4f..918378a004 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/Views/Shared/_Layout.cshtml
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/Views/Shared/_Layout.cshtml
@@ -12,6 +12,7 @@
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css"
               asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
               asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute"
+              crossorigin="anonymous"
               integrity="sha256-eSi1q2PG6J7g7ib17yAaWMcrr5GrtohYChqibrV7PBE=" />
     </environment>
     <link rel="stylesheet" href="~/css/site.css" />