diff --git a/go.mod b/go.mod
index 2a98ab1..a9af990 100644
--- a/go.mod
+++ b/go.mod
@@ -9,4 +9,5 @@ require (
 	github.com/pquerna/otp v1.4.0 // indirect
 	github.com/xlzd/gotp v0.1.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..341585a
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,19 @@
+github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc h1:biVzkmvwrH8WK8raXaxBx6fRVTlJILwEwQGL1I/ByEI=
+github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dspinhirne/netaddr-go v0.0.0-20211008142535-a4c5bccad224 h1:Y7k0gYiBQz/sMahnvLzM9I40UOvCeQ8WVjjsBeCtFF8=
+github.com/dspinhirne/netaddr-go v0.0.0-20211008142535-a4c5bccad224/go.mod h1:j1oDdmBtACJEAQr2T3DQNZQDfSuJzRKHadPABYd/MHo=
+github.com/joeig/go-powerdns/v3 v3.14.3 h1:z55hTGtBe7mEaKG1B/xtMHagqWPpxH+z4VVf8u9+NTc=
+github.com/joeig/go-powerdns/v3 v3.14.3/go.mod h1:hA54LX2p4A/Jp1Kgdhd7Lh3jAU0u7wV1mk1JbGywt60=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pquerna/otp v1.4.0 h1:wZvl1TIVxKRThZIBiwOOHOGP/1+nZyWBil9Y2XNEDzg=
+github.com/pquerna/otp v1.4.0/go.mod h1:dkJfzwRKNiegxyNb54X/3fLwhCynbMspSyWKnvi1AEg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/xlzd/gotp v0.1.0 h1:37blvlKCh38s+fkem+fFh7sMnceltoIEBYTVXyoa5Po=
+github.com/xlzd/gotp v0.1.0/go.mod h1:ndLJ3JKzi3xLmUProq4LLxCuECL93dG9WASNLpHz8qg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/main.go b/main.go
index 2a8849e..2d0e722 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,8 @@ package main
 /*
  * https://github.com/joeig/go-powerdns
  * https://github.com/xlzd/gotp
+ * https://github.com/dspinhirne/netaddr-go => https://pkg.go.dev/github.com/dspinhirne/netaddr-go
+ * https://github.com/go-yaml/yaml/tree/v2.4.0 => 
  */
 import (
 	"context"
@@ -10,7 +12,7 @@ import (
 	"github.com/dspinhirne/netaddr-go"
 	"github.com/joeig/go-powerdns/v3"
 	"github.com/xlzd/gotp"
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 	"log"
 	"net"
 	"net/http"
@@ -62,6 +64,7 @@ func main() {
 			ipv6, _ := netaddr.ParseIPv6(ip)
 			new_prefix := ipv6.NetId()
 
+			updated := false
 			for _, record_to_update := range c.Records {
 				records, err := pdns.Records.Get(ctx, c.Zone, record_to_update, powerdns.RRTypePtr(powerdns.RRTypeAAAA))
 				if err != nil {
@@ -75,17 +78,21 @@ func main() {
 						}
 						hostId := ipv6.HostId()
 						new_ipv6 := netaddr.NewIPv6(new_prefix, hostId)
-						log.Println(fmt.Sprintf("Host: %q -> %q", ipv6, new_ipv6))
-						err = pdns.Records.Change(ctx, c.Zone, record_to_update+"."+c.Zone, powerdns.RRTypeAAAA, 30, []string{new_ipv6.Long()})
-						if err != nil {
-							log.Fatalf("Update err %v ", err)
+						log.Println(fmt.Sprintf("Host: %q -> %q needs update: %t", ipv6, new_ipv6, ipv6.Long() != new_ipv6.Long()))
+						if ipv6.Long() != new_ipv6.Long() {
+							updated = true
+							err = pdns.Records.Change(ctx, c.Zone, record_to_update+"."+c.Zone, powerdns.RRTypeAAAA, 30, []string{new_ipv6.Long()})
+							if err != nil {
+								log.Fatalf("Update err %v ", err)
+							}
 						}
 					}
 				}
 			}
-
-			pdns.Zones.Notify(ctx, c.Zone)
-			log.Println("Updated...")
+			if updated {
+				pdns.Zones.Notify(ctx, c.Zone)
+				log.Println("Updated...")
+			}
 		}
 	})