diff --git a/go.sum b/go.sum
index 670c2713f..a176f11be 100644
--- a/go.sum
+++ b/go.sum
@@ -758,8 +758,6 @@ gopkg.in/yaml.v2 v2.2.8/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=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/internal/restic/id.go b/internal/restic/id.go
index c098dbfb3..6d85ed68a 100644
--- a/internal/restic/id.go
+++ b/internal/restic/id.go
@@ -3,7 +3,6 @@ package restic
 import (
 	"crypto/rand"
 	"encoding/hex"
-	"encoding/json"
 	"fmt"
 	"io"
 
@@ -98,7 +97,13 @@ func (id ID) EqualString(other string) (bool, error) {
 
 // MarshalJSON returns the JSON encoding of id.
 func (id ID) MarshalJSON() ([]byte, error) {
-	return json.Marshal(id.String())
+	buf := make([]byte, 2+hex.EncodedLen(len(id)))
+
+	buf[0] = '"'
+	hex.Encode(buf[1:], id[:])
+	buf[len(buf)-1] = '"'
+
+	return buf, nil
 }
 
 // UnmarshalJSON parses the JSON-encoded data and stores the result in id.