diff --git a/MailingNinja.Core/MailingNinja.Core.csproj b/MailingNinja.Core/MailingNinja.Core.csproj
index 2847199..1e22f45 100644
--- a/MailingNinja.Core/MailingNinja.Core.csproj
+++ b/MailingNinja.Core/MailingNinja.Core.csproj
@@ -13,7 +13,7 @@
 		<PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="9.0.0" />
 		<PackageReference Include="MediatR" Version="9.0.0" />
 		<PackageReference Include="FluentValidation.AspNetCore" Version="10.3.4" />
-		<PackageReference Include="MimeKit" Version="3.0.0" />
+		<PackageReference Include="MimeKit" Version="4.7.1" />
   </ItemGroup>
 
   <ItemGroup>