diff --git a/go.mod b/go.mod
index 30cbf3d5b38e917e675b36256dd4137213bbcfe6..33e41c54f45f91e8934e33d8758da7edd110ff38 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/lpar/gzipped v1.1.1-0.20190413023519-5d9a18ea7f47
 	github.com/miekg/dns v1.1.40
 	github.com/prometheus/client_golang v1.9.0
-	github.com/prometheus/common v0.18.0
+	github.com/prometheus/common v0.19.0
 	go.etcd.io/etcd v0.5.0-alpha.5.0.20190401205724-a621d807f061
 	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
diff --git a/go.sum b/go.sum
index 16153b2854b9177e9055c95f6f4f3ccebf6942c5..87da781cbbd2fe83182a9d36e38afcd76dd0c444 100644
--- a/go.sum
+++ b/go.sum
@@ -288,6 +288,8 @@ github.com/prometheus/common v0.17.0 h1:kDIZLI74SS+3tedSvEkykgBkD7txMxaJAPj8DtJU
 github.com/prometheus/common v0.17.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
 github.com/prometheus/common v0.18.0 h1:WCVKW7aL6LEe1uryfI9dnEc2ZqNB1Fn0ok930v0iL1Y=
 github.com/prometheus/common v0.18.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
+github.com/prometheus/common v0.19.0 h1:Itb4+NjG9wRdkAWgVucbM/adyIXxEhbw0866e0uZE6A=
+github.com/prometheus/common v0.19.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
 github.com/prometheus/procfs v0.0.0-20180612222113-7d6f385de8be h1:MoyXp/VjXUwM0GyDcdwT7Ubea2gxOSHpPaFo3qV+Y2A=
 github.com/prometheus/procfs v0.0.0-20180612222113-7d6f385de8be/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go
index 77b82b2baa20a15b8c16bcd62e73c3a2db6886a3..e684ebd11af3e5c7049fd5d3d27c265f3ca73a54 100644
--- a/vendor/github.com/prometheus/common/model/time.go
+++ b/vendor/github.com/prometheus/common/model/time.go
@@ -14,6 +14,7 @@
 package model
 
 import (
+	"encoding/json"
 	"fmt"
 	"math"
 	"regexp"
@@ -254,6 +255,25 @@ func (d Duration) String() string {
 	return r
 }
 
+// MarshalJSON implements the json.Marshaler interface.
+func (d Duration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(d.String())
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (d *Duration) UnmarshalJSON(bytes []byte) error {
+	var s string
+	if err := json.Unmarshal(bytes, &s); err != nil {
+		return err
+	}
+	dur, err := ParseDuration(s)
+	if err != nil {
+		return err
+	}
+	*d = dur
+	return nil
+}
+
 // MarshalText implements the encoding.TextMarshaler interface.
 func (d *Duration) MarshalText() ([]byte, error) {
 	return []byte(d.String()), nil
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 69fcd5bd0e62ee137d9102cfc888f1b3790fcdc1..8a12c554d4903e63ca720aa6f2e03a8dc1f3c7a3 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -88,7 +88,7 @@ github.com/prometheus/client_golang/prometheus/internal
 github.com/prometheus/client_golang/prometheus/promhttp
 # github.com/prometheus/client_model v0.2.0
 github.com/prometheus/client_model/go
-# github.com/prometheus/common v0.18.0
+# github.com/prometheus/common v0.19.0
 ## explicit
 github.com/prometheus/common/expfmt
 github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg