diff --git a/Rnwood.Smtp4dev.Tests/Rnwood.Smtp4dev.Tests.csproj b/Rnwood.Smtp4dev.Tests/Rnwood.Smtp4dev.Tests.csproj
index 34ae1540d..05dd5477a 100644
--- a/Rnwood.Smtp4dev.Tests/Rnwood.Smtp4dev.Tests.csproj
+++ b/Rnwood.Smtp4dev.Tests/Rnwood.Smtp4dev.Tests.csproj
@@ -25,7 +25,7 @@
 
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
-    <PackageReference Include="MailKit" Version="4.3.0" />
+    <PackageReference Include="MailKit" Version="4.4.0" />
     <PackageReference Include="MedallionShell" Version="1.6.2" />
     <PackageReference Include="NSubstitute" Version="5.1.0" />
     <PackageReference Include="ReflectionMagic" Version="5.0.1" />
diff --git a/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj b/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
index fed08c932..8d402551d 100644
--- a/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
+++ b/Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj
@@ -27,7 +27,7 @@
     <PackageReference Include="Ardalis.GuardClauses" Version="4.5.0" />
     <PackageReference Include="CommandLiners.MonoOptions" Version="1.0.36" />
     <PackageReference Include="HtmlAgilityPack" Version="1.11.59" />
-    <PackageReference Include="MailKit" Version="4.3.0" />
+    <PackageReference Include="MailKit" Version="4.4.0" />
     <PackageReference Include="Microsoft.AspNetCore.Hosting.WindowsServices" Version="8.0.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Analyzers" Version="8.0.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.2">