diff --git a/ShareX.UploadersLib/FileUploaders/FTP.cs b/ShareX.UploadersLib/FileUploaders/FTP.cs
index a8be9ed1d..72245fbfb 100644
--- a/ShareX.UploadersLib/FileUploaders/FTP.cs
+++ b/ShareX.UploadersLib/FileUploaders/FTP.cs
@@ -32,6 +32,7 @@ You should have received a copy of the GNU General Public License
 using System.IO;
 using System.Net;
 using System.Net.Security;
+using System.Security.Authentication;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using System.Windows.Forms;
@@ -141,6 +142,7 @@ public FTP(FTPAccount account)
                         break;
                 }
 
+                client.SslProtocols = SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12;
                 client.DataConnectionEncryption = true;
 
                 if (!string.IsNullOrEmpty(account.FTPSCertificateLocation) && File.Exists(account.FTPSCertificateLocation))