diff --git a/src/Ombi.Notifications/Ombi.Notifications.csproj b/src/Ombi.Notifications/Ombi.Notifications.csproj
index d061707fe..0f074463d 100644
--- a/src/Ombi.Notifications/Ombi.Notifications.csproj
+++ b/src/Ombi.Notifications/Ombi.Notifications.csproj
@@ -12,7 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="Ensure.That" Version="10.1.0" />
-    <PackageReference Include="MailKit" Version="3.4.1" />
+    <PackageReference Include="MailKit" Version="4.1.0" />
   </ItemGroup>
 
   <ItemGroup>