diff --git a/config/config.go b/config/config.go
index a6089c5..f58b3c5 100644
--- a/config/config.go
+++ b/config/config.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/go-playground/validator/v10"
 	"github.com/pkg/errors"
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 )
 
 // Config
diff --git a/go.mod b/go.mod
index 7f40f8f..476813d 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,7 @@ require (
 	github.com/yhirose/go-peg v0.0.0-20210804202551-de25d6753cf1
 	golang.org/x/crypto v0.0.0-20211202192323-5770296d904e
 	golang.org/x/text v0.3.7
-	gopkg.in/yaml.v2 v2.4.0
+	gopkg.in/yaml.v3 v3.0.0
 	gorm.io/driver/mysql v1.2.1
 	gorm.io/driver/postgres v1.2.3
 	gorm.io/driver/sqlite v1.2.6
@@ -64,6 +64,5 @@ require (
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	golang.org/x/sys v0.0.0-20211205182925-97ca703d548d // indirect
 	google.golang.org/protobuf v1.26.0-rc.1 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	mellium.im/sasl v0.2.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 73cef0e..fdba0f3 100644
--- a/go.sum
+++ b/go.sum
@@ -431,12 +431,12 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-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 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
+gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gorm.io/driver/mysql v1.2.1 h1:h+3f1l9Ng2C072Y2tIiLgPpWN78r1KXL7bHJ0nTjlhU=
 gorm.io/driver/mysql v1.2.1/go.mod h1:qsiz+XcAyMrS6QY+X3M9R6b/lKM1imKmcuK9kac5LTo=
 gorm.io/driver/postgres v1.2.3 h1:f4t0TmNMy9gh3TU2PX+EppoA6YsgFnyq8Ojtddb42To=
diff --git a/tzkt/api/api.go b/tzkt/api/api.go
index b2094a3..1bf09c7 100644
--- a/tzkt/api/api.go
+++ b/tzkt/api/api.go
@@ -151,14 +151,11 @@ func (tzkt *API) auth(request *http.Request) error {
 	if tzkt.privateKey == "" || tzkt.user == "" {
 		return errors.Errorf("you have to set auth data")
 	}
-
-	nonce := time.Now().UnixMilli()
 	key, err := crypto.NewKeyFromBase58(tzkt.privateKey)
 	if err != nil {
 		return err
 	}
-
-	nonceString := fmt.Sprintf("%d", nonce)
+	nonceString := fmt.Sprintf("%d", time.Now().UTC().UnixMilli())
 
 	sign, err := key.Sign([]byte(nonceString))
 	if err != nil {