diff --git a/Refresh.Core/Refresh.Core.csproj b/Refresh.Core/Refresh.Core.csproj
index 89cae4ce..fe24ec74 100644
--- a/Refresh.Core/Refresh.Core.csproj
+++ b/Refresh.Core/Refresh.Core.csproj
@@ -22,7 +22,7 @@
         <PackageReference Include="CommandLineParser" Version="2.9.1" />
         <PackageReference Include="Discord.Net.Webhook" Version="3.18.0" />
         <PackageReference Include="DnsClient" Version="1.8.0" />
-        <PackageReference Include="MailKit" Version="4.16.0" />
+        <PackageReference Include="MailKit" Version="4.18.1" />
         <PackageReference Include="NPTicket" Version="3.1.1" />
         <PackageReference Include="Pfim" Version="0.11.3" />
         <PackageReference Include="SharpZipLib" Version="1.4.2" />