diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 112802e3..21abadba 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 	<ItemGroup>
-      <PackageReference Include="SonarAnalyzer.CSharp" Version="9.0.0.68202">
+      <PackageReference Include="SonarAnalyzer.CSharp" Version="9.1.0.70676">
         <PrivateAssets>all</PrivateAssets>
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       </PackageReference>
diff --git a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Extensions.cs b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Extensions.cs
index f81e46c7..5ab95b8f 100644
--- a/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Extensions.cs
+++ b/src/LinkDotNet.Blog.Web/Authentication/Auth0/Auth0Extensions.cs
@@ -62,7 +62,7 @@ private static Task HandleRedirect(Auth0Information auth0, RedirectContext conte
         var postLogoutUri = context.Properties.RedirectUri;
         if (!string.IsNullOrEmpty(postLogoutUri))
         {
-            if (postLogoutUri.StartsWith("/"))
+            if (postLogoutUri.StartsWith('/'))
             {
                 var request = context.Request;
                 postLogoutUri = request.Scheme + "://" + request.Host + request.PathBase + postLogoutUri;