diff --git a/src/Miningcore/Miningcore.csproj b/src/Miningcore/Miningcore.csproj
index 8b83a4e..1d884d9 100644
--- a/src/Miningcore/Miningcore.csproj
+++ b/src/Miningcore/Miningcore.csproj
@@ -71,7 +71,7 @@
         <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.1" />
         <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.11.0" />
         <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />
-        <PackageReference Include="MailKit" Version="3.5.0" />
+        <PackageReference Include="MailKit" Version="4.17.0" />
         <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="4.0.2" />
         <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="8.0.1" />
         <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />