diff --git a/sshdyndns b/sshdyndns
index 1a4b9ba..f32bfcb 100755
--- a/sshdyndns
+++ b/sshdyndns
@@ -27,7 +27,7 @@ use Pod::Usage;
 my $port = 53;
 my $ttl = 3600;
 my $help = 0;
-my $tsigalgo = 'hmac-md5';
+my $tsigalgo = 'hmac-sha256';
 my ($tsigname, $tsigkey, $server, $verbose, $tsig);
 my ($old_rr, $new_rr, $update, $resolver, $reply, $ip);
 
@@ -149,7 +149,7 @@ Base64 encoding of the TSIG key.
 
 =item B<-tsigalgo>
 
-Algorithm of the TSGI key, default hmac-md5.
+Algorithm of the TSGI key, default hmac-sha256.
 
 =back