diff --git a/common/openvpn/templates/openvpn-common b/common/openvpn/templates/openvpn-common
index 2fbc51ef890e198d9878bf83ae1b5a88d56be5ed..3356341c1b9448fa12d53c7b61f756b226d32baa 100644
--- a/common/openvpn/templates/openvpn-common
+++ b/common/openvpn/templates/openvpn-common
@@ -3,7 +3,7 @@ persist-tun
 persist-key
 
 cipher AES-256-CBC
-auth SHA256
+auth SHA512
 
 comp-lzo adaptive
 keepalive 10 60