diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe47fd64..cc2446ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
-## v1.0.13 / 2021-06-04
+## v1.0.14 / 2021-06-04
 
 - 优化
 - 增加go.mod
+- 修复代码
 
 ## v1.0.11 / 2021-05-31
 
diff --git a/helper/http/http.go b/helper/http/http.go
index 6d8f0c84..206f864c 100644
--- a/helper/http/http.go
+++ b/helper/http/http.go
@@ -3,7 +3,7 @@ package http
 import (
 	"encoding/json"
 	"github.com/bitly/go-simplejson"
-	"github.com/dtapps/GoLibrary/helper/request"
+	"github.com/dtapps/go-library/helper/request"
 	"gopkg.in/h2non/gentleman.v2"
 	"gopkg.in/h2non/gentleman.v2/plugins/body"
 )
diff --git a/helper/string/string.go b/helper/string/string.go
new file mode 100644
index 00000000..36bb5d9d
--- /dev/null
+++ b/helper/string/string.go
@@ -0,0 +1,13 @@
+package string
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
+)
+
+func HmacSha256Hex(key, strToSign string) string {
+	hasher := hmac.New(sha256.New, []byte(key))
+	hasher.Write([]byte(strToSign))
+	return hex.EncodeToString(hasher.Sum(nil))
+}
diff --git a/helper/time/time.go b/helper/time/time.go
index eae49027..31aa4c70 100644
--- a/helper/time/time.go
+++ b/helper/time/time.go
@@ -2,6 +2,15 @@ package time
 
 import "time"
 
+const (
+	RFC822Format  = "Mon, 02 Jan 2006 15:04:05 MST"
+	ISO8601Format = "2006-01-02T15:04:05Z"
+)
+
+func NowUTCSeconds() int64 { return time.Now().UTC().Unix() }
+
+func NowUTCNanoSeconds() int64 { return time.Now().UTC().UnixNano() }
+
 // GetCurrentDate 获取当前的时间 - 字符串
 func GetCurrentDate() string {
 	return time.Now().Format("2006/01/02 15:04:05")
@@ -26,3 +35,8 @@ func GetCurrentNanoUnix() int64 {
 func GetCurrentWjDate() string {
 	return time.Now().Format("20060102")
 }
+
+func FormatISO8601Date(timestamp_second int64) string {
+	tm := time.Unix(timestamp_second, 0).UTC()
+	return tm.Format(ISO8601Format)
+}
diff --git a/service/ddk/Ddk.go b/service/ddk/Ddk.go
index e405015b..d98bf877 100644
--- a/service/ddk/Ddk.go
+++ b/service/ddk/Ddk.go
@@ -8,7 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/bitly/go-simplejson"
-	"github.com/dtapps/GoLibrary/service"
+	"github.com/dtapps/go-library/service"
 	"github.com/nilorg/sdk/convert"
 	"io"
 	"io/ioutil"
diff --git a/service/jdk/Jdk.go b/service/jdk/Jdk.go
index 2fbabc39..925dd022 100644
--- a/service/jdk/Jdk.go
+++ b/service/jdk/Jdk.go
@@ -8,7 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/bitly/go-simplejson"
-	"github.com/dtapps/GoLibrary/service"
+	"github.com/dtapps/go-library/service"
 	"github.com/nilorg/sdk/convert"
 	"io"
 	"io/ioutil"
diff --git a/service/tbk/Tbk.go b/service/tbk/Tbk.go
index 90953918..f7155c80 100644
--- a/service/tbk/Tbk.go
+++ b/service/tbk/Tbk.go
@@ -8,7 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"github.com/bitly/go-simplejson"
-	"github.com/dtapps/GoLibrary/service"
+	"github.com/dtapps/go-library/service"
 	"github.com/nilorg/sdk/convert"
 	"io"
 	"io/ioutil"