diff --git a/acme/api/api.go b/acme/api/api.go
index 5fa51d63..b018b25f 100644
--- a/acme/api/api.go
+++ b/acme/api/api.go
@@ -10,7 +10,7 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/cenkalti/backoff/v3"
+	"github.com/cenkalti/backoff/v4"
 	"github.com/go-acme/lego/v3/acme"
 	"github.com/go-acme/lego/v3/acme/api/internal/nonces"
 	"github.com/go-acme/lego/v3/acme/api/internal/secure"
diff --git a/challenge/resolver/solver_manager.go b/challenge/resolver/solver_manager.go
index 427608e0..411a221f 100644
--- a/challenge/resolver/solver_manager.go
+++ b/challenge/resolver/solver_manager.go
@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/cenkalti/backoff/v3"
+	"github.com/cenkalti/backoff/v4"
 	"github.com/go-acme/lego/v3/acme"
 	"github.com/go-acme/lego/v3/acme/api"
 	"github.com/go-acme/lego/v3/challenge"
diff --git a/go.mod b/go.mod
index 8ec490ee..a2b702d5 100644
--- a/go.mod
+++ b/go.mod
@@ -15,7 +15,7 @@ require (
 	github.com/akamai/AkamaiOPEN-edgegrid-golang v0.9.0
 	github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190808125512-07798873deee
 	github.com/aws/aws-sdk-go v1.23.0
-	github.com/cenkalti/backoff/v3 v3.0.0
+	github.com/cenkalti/backoff/v4 v4.0.0
 	github.com/cloudflare/cloudflare-go v0.10.2
 	github.com/cpu/goacmedns v0.0.1
 	github.com/dnsimple/dnsimple-go v0.30.0
diff --git a/go.sum b/go.sum
index 6c5819f0..205e4579 100644
--- a/go.sum
+++ b/go.sum
@@ -60,8 +60,8 @@ github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/cenkalti/backoff/v3 v3.0.0 h1:ske+9nBpD9qZsTBoF41nW5L+AIuFBKMeze18XQ3eG1c=
-github.com/cenkalti/backoff/v3 v3.0.0/go.mod h1:cIeZDE3IrqwwJl6VUwCN6trj1oXrTS4rc0ij+ULvLYs=
+github.com/cenkalti/backoff/v4 v4.0.0 h1:6VeaLF9aI+MAUQ95106HwWzYZgJJpZ4stumjj6RFYAU=
+github.com/cenkalti/backoff/v4 v4.0.0/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
 github.com/census-instrumentation/opencensus-proto v0.2.0 h1:LzQXZOgg4CQfE6bFvXGM30YZL1WW/M337pXml+GrcZ4=
 github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
diff --git a/providers/dns/hostingde/client.go b/providers/dns/hostingde/client.go
index 912b40ea..d905f8f3 100644
--- a/providers/dns/hostingde/client.go
+++ b/providers/dns/hostingde/client.go
@@ -10,7 +10,7 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/cenkalti/backoff/v3"
+	"github.com/cenkalti/backoff/v4"
 )
 
 const defaultBaseURL = "https://secure.hosting.de/api/dns/v1/json"