diff --git a/modules/ssl/files/ssl-certificate.py b/modules/ssl/files/ssl-certificate.py
index 191c2bf907..964598f7e3 100644
--- a/modules/ssl/files/ssl-certificate.py
+++ b/modules/ssl/files/ssl-certificate.py
@@ -139,7 +139,7 @@ def generate_letsencrypt_certificate(self):
             if not self.quiet:
                 print('Pushing LetsEncrypt SSL certificate to GitHub')
 
-            os.system('git config --global core.sshCommand "ssh -i /var/lib/nagios/id_ed25519 -F /dev/null -o ProxyCommand=\'nc -6 -X connect -x bastion.wikitide.net:8080 %h %p\'"')
+            os.system('git config --global core.sshCommand "ssh -i /var/lib/nagios/id_ed25519 -F /dev/null -o ProxyCommand=\'nc -X connect -x bastion.wikitide.net:8080 %h %p\'"')
             os.system('git -C /srv/ssl/ssl/ config user.name "WikiTideSSLBot"')
             os.system('git -C /srv/ssl/ssl/ config user.email "noreply@wikitide.org"')
             os.system('git -C /srv/ssl/ssl/ reset --hard origin/master')