diff --git a/go.mod b/go.mod
index 6ab8587..3d88276 100644
--- a/go.mod
+++ b/go.mod
@@ -1,14 +1,15 @@
 module github.com/yukimochi/Activity-Relay
 
-go 1.13
+go 1.14
 
 require (
-	github.com/RichardKnop/machinery v1.7.3
+	github.com/RichardKnop/machinery v1.7.8
 	github.com/Songmu/go-httpdate v1.0.0
+	github.com/go-fed/httpsig v0.1.1-0.20200204213531-0ef28562fabe
 	github.com/go-redis/redis v6.15.7+incompatible
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/satori/go.uuid v1.2.0
-	github.com/spf13/cobra v0.0.6
-	github.com/spf13/viper v1.6.2
+	github.com/spf13/cobra v1.0.0
+	github.com/spf13/viper v1.7.0
 	github.com/yukimochi/httpsig v0.1.3
 )
diff --git a/worker/sender.go b/worker/sender.go
index 8028902..4e4befc 100644
--- a/worker/sender.go
+++ b/worker/sender.go
@@ -11,8 +11,8 @@ import (
 	"time"
 
 	httpdate "github.com/Songmu/go-httpdate"
+	"github.com/go-fed/httpsig"
 	"github.com/spf13/viper"
-	"github.com/yukimochi/httpsig"
 )
 
 func appendSignature(request *http.Request, body *[]byte, KeyID string, publicKey *rsa.PrivateKey) error {
@@ -22,11 +22,11 @@ func appendSignature(request *http.Request, body *[]byte, KeyID string, publicKe
 	request.Header.Set("Digest", "SHA-256="+base64.StdEncoding.EncodeToString(b))
 	request.Header.Set("Host", request.Host)
 
-	signer, _, err := httpsig.NewSigner([]httpsig.Algorithm{httpsig.RSA_SHA256}, []string{httpsig.RequestTarget, "Host", "Date", "Digest", "Content-Type"}, httpsig.Signature)
+	signer, _, err := httpsig.NewSigner([]httpsig.Algorithm{httpsig.RSA_SHA256}, httpsig.DigestSha256, []string{httpsig.RequestTarget, "Host", "Date", "Digest", "Content-Type"}, httpsig.Signature)
 	if err != nil {
 		return err
 	}
-	err = signer.SignRequest(publicKey, KeyID, request)
+	err = signer.SignRequest(publicKey, KeyID, request, *body)
 	if err != nil {
 		return err
 	}