diff --git a/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj b/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
index b9af478e5..cad901a63 100644
--- a/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
+++ b/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
@@ -27,7 +27,7 @@
 
   <ItemGroup>
     <PackageReference Include="Ardalis.GuardClauses" Version="5.0.0" />
-    <PackageReference Include="AspNetCore.Authentication.Basic" Version="8.0.0" />
+    <PackageReference Include="AspNetCore.Authentication.Basic" Version="9.0.0" />
     <PackageReference Include="CommandLiners.MonoOptions" Version="1.0.45" />
     <PackageReference Include="DeepEqual" Version="5.1.0" />
     <PackageReference Include="DotNet.Glob" Version="3.1.3" />