diff --git a/go.mod b/go.mod
index 5fcb2b30..f2562ba7 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.19
 
 require (
 	github.com/apex/log v1.9.0
-	github.com/miekg/dns v1.1.55
+	github.com/miekg/dns v1.1.56
 	github.com/pelletier/go-toml/v2 v2.1.0
 )
 
diff --git a/go.sum b/go.sum
index 4b3671c0..94456729 100644
--- a/go.sum
+++ b/go.sum
@@ -35,8 +35,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
-github.com/miekg/dns v1.1.55 h1:GoQ4hpsj0nFLYe+bWiCToyrBEJXkQfOOIvFGFy0lEgo=
-github.com/miekg/dns v1.1.55/go.mod h1:uInx36IzPl7FYnDcMeVWxj9byh7DutNykX4G9Sj60FY=
+github.com/miekg/dns v1.1.56 h1:5imZaSeoRNvpM9SzWNhEcP9QliKiz20/dA2QabIGVnE=
+github.com/miekg/dns v1.1.56/go.mod h1:cRm6Oo2C8TY9ZS/TqsSrseAcncm74lfK5G+ikN2SWWY=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=
diff --git a/vendor/github.com/miekg/dns/README.md b/vendor/github.com/miekg/dns/README.md
index 06bea9fa..95bc08d5 100644
--- a/vendor/github.com/miekg/dns/README.md
+++ b/vendor/github.com/miekg/dns/README.md
@@ -81,6 +81,7 @@ A not-so-up-to-date-list-that-may-be-actually-current:
 * https://addr.tools/
 * https://dnscheck.tools/
 * https://github.com/egbakou/domainverifier
+* https://github.com/semihalev/sdns
 
 
 Send pull request if you want to be listed here.
diff --git a/vendor/github.com/miekg/dns/defaults.go b/vendor/github.com/miekg/dns/defaults.go
index c1558b79..6d7e1760 100644
--- a/vendor/github.com/miekg/dns/defaults.go
+++ b/vendor/github.com/miekg/dns/defaults.go
@@ -5,6 +5,7 @@ import (
 	"net"
 	"strconv"
 	"strings"
+	"unicode"
 )
 
 const hexDigit = "0123456789abcdef"
@@ -330,8 +331,18 @@ func Fqdn(s string) string {
 
 // CanonicalName returns the domain name in canonical form. A name in canonical
 // form is lowercase and fully qualified. See Section 6.2 in RFC 4034.
+// According to the RFC all uppercase US-ASCII letters in the owner name of the
+// RR areeplaced by the corresponding lowercase US-ASCII letters.
 func CanonicalName(s string) string {
-	return strings.ToLower(Fqdn(s))
+	var result strings.Builder
+	for _, ch := range s {
+		if unicode.IsUpper(ch) && (ch >= 0x00 && ch <= 0x7F) {
+			result.WriteRune(unicode.ToLower(ch))
+		} else {
+			result.WriteRune(ch)
+		}
+	}
+	return Fqdn(result.String())
 }
 
 // Copied from the official Go code.
diff --git a/vendor/github.com/miekg/dns/msg.go b/vendor/github.com/miekg/dns/msg.go
index d5049a4f..b05cf14e 100644
--- a/vendor/github.com/miekg/dns/msg.go
+++ b/vendor/github.com/miekg/dns/msg.go
@@ -896,23 +896,38 @@ func (dns *Msg) String() string {
 		return "<nil> MsgHdr"
 	}
 	s := dns.MsgHdr.String() + " "
-	s += "QUERY: " + strconv.Itoa(len(dns.Question)) + ", "
-	s += "ANSWER: " + strconv.Itoa(len(dns.Answer)) + ", "
-	s += "AUTHORITY: " + strconv.Itoa(len(dns.Ns)) + ", "
-	s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	if dns.MsgHdr.Opcode == OpcodeUpdate {
+		s += "ZONE: " + strconv.Itoa(len(dns.Question)) + ", "
+		s += "PREREQ: " + strconv.Itoa(len(dns.Answer)) + ", "
+		s += "UPDATE: " + strconv.Itoa(len(dns.Ns)) + ", "
+		s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	} else {
+		s += "QUERY: " + strconv.Itoa(len(dns.Question)) + ", "
+		s += "ANSWER: " + strconv.Itoa(len(dns.Answer)) + ", "
+		s += "AUTHORITY: " + strconv.Itoa(len(dns.Ns)) + ", "
+		s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	}
 	opt := dns.IsEdns0()
 	if opt != nil {
 		// OPT PSEUDOSECTION
 		s += opt.String() + "\n"
 	}
 	if len(dns.Question) > 0 {
-		s += "\n;; QUESTION SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; ZONE SECTION:\n"
+		} else {
+			s += "\n;; QUESTION SECTION:\n"
+		}
 		for _, r := range dns.Question {
 			s += r.String() + "\n"
 		}
 	}
 	if len(dns.Answer) > 0 {
-		s += "\n;; ANSWER SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; PREREQUISITE SECTION:\n"
+		} else {
+			s += "\n;; ANSWER SECTION:\n"
+		}
 		for _, r := range dns.Answer {
 			if r != nil {
 				s += r.String() + "\n"
@@ -920,7 +935,11 @@ func (dns *Msg) String() string {
 		}
 	}
 	if len(dns.Ns) > 0 {
-		s += "\n;; AUTHORITY SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; UPDATE SECTION:\n"
+		} else {
+			s += "\n;; AUTHORITY SECTION:\n"
+		}
 		for _, r := range dns.Ns {
 			if r != nil {
 				s += r.String() + "\n"
diff --git a/vendor/github.com/miekg/dns/types.go b/vendor/github.com/miekg/dns/types.go
index 03afeccd..c9a03dec 100644
--- a/vendor/github.com/miekg/dns/types.go
+++ b/vendor/github.com/miekg/dns/types.go
@@ -236,6 +236,9 @@ var CertTypeToString = map[uint16]string{
 	CertOID:     "OID",
 }
 
+// Prefix for IPv4 encoded as IPv6 address
+const ipv4InIPv6Prefix = "::ffff:"
+
 //go:generate go run types_generate.go
 
 // Question holds a DNS question. Usually there is just one. While the
@@ -751,6 +754,11 @@ func (rr *AAAA) String() string {
 	if rr.AAAA == nil {
 		return rr.Hdr.String()
 	}
+
+	if rr.AAAA.To4() != nil {
+		return rr.Hdr.String() + ipv4InIPv6Prefix + rr.AAAA.String()
+	}
+
 	return rr.Hdr.String() + rr.AAAA.String()
 }
 
@@ -1517,7 +1525,7 @@ func (a *APLPrefix) str() string {
 	case net.IPv6len:
 		// add prefix for IPv4-mapped IPv6
 		if v4 := a.Network.IP.To4(); v4 != nil {
-			sb.WriteString("::ffff:")
+			sb.WriteString(ipv4InIPv6Prefix)
 		}
 		sb.WriteString(a.Network.IP.String())
 	}
diff --git a/vendor/github.com/miekg/dns/version.go b/vendor/github.com/miekg/dns/version.go
index 5891044a..a0911366 100644
--- a/vendor/github.com/miekg/dns/version.go
+++ b/vendor/github.com/miekg/dns/version.go
@@ -3,7 +3,7 @@ package dns
 import "fmt"
 
 // Version is current version of this library.
-var Version = v{1, 1, 55}
+var Version = v{1, 1, 56}
 
 // v holds the version of this library.
 type v struct {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 1339ebff..7559b9bc 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -18,7 +18,7 @@ github.com/mattn/go-colorable
 # github.com/mattn/go-isatty v0.0.19
 ## explicit; go 1.15
 github.com/mattn/go-isatty
-# github.com/miekg/dns v1.1.55
+# github.com/miekg/dns v1.1.56
 ## explicit; go 1.19
 github.com/miekg/dns
 # github.com/pelletier/go-toml/v2 v2.1.0