diff --git a/filter/cleanfeed.local b/filter/cleanfeed.local
index ef678c1..0cddd85 100644
--- a/filter/cleanfeed.local
+++ b/filter/cleanfeed.local
@@ -68,20 +68,24 @@ sub verify_cancel_key($$$) {
 
    my %lock;
    for my $l(split(/\s+/, $cancel_lock))   {
-      next unless($l =~ m/^(sha1|md5):(\S+)/);
+      next unless($l =~ m/^(sha512|sha256|sha1|md5):(\S+)/);
       $lock{$2} = $1;
    }
 
    for my $k(split(/\s+/, $cancel_key))    {
-      unless($k =~ m/^(sha1|md5):(\S+)/) { 
+      unless($k =~ m/^(sha512|sha256|sha1|md5):(\S+)/) { 
         INN::syslog('notice', "Invalid Cancel-Key syntax '$k'.$msg");
         next;
       }
 
       my $key;
-      if ($1 eq 'sha1') {
-         $key = Digest::SHA::sha1($2); }
-      elsif ($1 eq 'md5') {
+      if ($1 eq 'sha512') {
+        $key = Digest::SHA::sha512($2);
+      } elsif ($1 eq 'sha256') {
+         $key = Digest::SHA::sha256($2);
+      } elsif($1 eq 'sha1') {
+         $key = Digest::SHA::sha1($2);
+      } elsif ($1 eq 'md5') {
          $key = Digest::MD5::md5($2);
       }
       $key = MIME::Base64::encode_base64($key, '');