diff --git a/Makefile b/Makefile
index bd341e1a..6dfcbfa6 100644
--- a/Makefile
+++ b/Makefile
@@ -39,16 +39,16 @@ checks:
 .PHONY: patch minor major detach
 
 patch:
-	go run internal/release.go release -m patch
+	go run ./internal/useragent/ release -m patch
 
 minor:
-	go run internal/release.go release -m minor
+	go run ./internal/useragent/ release -m minor
 
 major:
-	go run internal/release.go release -m major
+	go run ./internal/useragent/ release -m major
 
 detach:
-	go run internal/release.go detach
+	go run ./internal/useragent/ detach
 
 # Docs
 .PHONY: docs-build docs-serve docs-themes
diff --git a/acme/api/internal/sender/useragent.go b/acme/api/internal/sender/useragent.go
index 2dc84fc2..7fb4a94e 100644
--- a/acme/api/internal/sender/useragent.go
+++ b/acme/api/internal/sender/useragent.go
@@ -1,7 +1,6 @@
-package sender
+// Code generated by 'internal/useragent'; DO NOT EDIT.
 
-// CODE GENERATED AUTOMATICALLY
-// THIS FILE MUST NOT BE EDITED BY HAND
+package sender
 
 const (
 	// ourUserAgent is the User-Agent of this underlying library package.
diff --git a/internal/useragent/data_dns.go b/internal/useragent/data_dns.go
new file mode 100644
index 00000000..2ce8a322
--- /dev/null
+++ b/internal/useragent/data_dns.go
@@ -0,0 +1,36 @@
+package main
+
+const dnsBaseUserAgent = "goacme-lego/"
+
+const dnsSourceFile = "./providers/dns/internal/useragent/useragent.go"
+
+const dnsTemplate = `// Code generated by 'internal/useragent'; DO NOT EDIT.
+
+package useragent
+
+import (
+	"fmt"
+	"net/http"
+	"runtime"
+)
+
+const (
+	// ourUserAgent is the User-Agent of this underlying library package.
+	ourUserAgent = "goacme-lego/{{ .version }}"
+
+	// ourUserAgentComment is part of the UA comment linked to the version status of this underlying library package.
+	// values: detach|release
+	// NOTE: Update this with each tagged release.
+	ourUserAgentComment = "{{ .comment }}"
+)
+
+// Get builds and returns the User-Agent string.
+func Get() string {
+	return fmt.Sprintf("%s (%s; %s; %s)", ourUserAgent, ourUserAgentComment, runtime.GOOS, runtime.GOARCH)
+}
+
+// SetHeader sets the User-Agent header.
+func SetHeader(h http.Header) {
+	h.Set("User-Agent", Get())
+}
+`
diff --git a/internal/useragent/data_sender.go b/internal/useragent/data_sender.go
new file mode 100644
index 00000000..5da2d853
--- /dev/null
+++ b/internal/useragent/data_sender.go
@@ -0,0 +1,21 @@
+package main
+
+const senderBaseUserAgent = "xenolf-acme/"
+
+const senderSourceFile = "./acme/api/internal/sender/useragent.go"
+
+const senderTemplate = `// Code generated by 'internal/useragent'; DO NOT EDIT.
+
+package sender
+
+const (
+	// ourUserAgent is the User-Agent of this underlying library package.
+	ourUserAgent = "xenolf-acme/{{ .version }}"
+
+	// ourUserAgentComment is part of the UA comment linked to the version status of this underlying library package.
+	// values: detach|release
+	// NOTE: Update this with each tagged release.
+	ourUserAgentComment = "{{ .comment }}"
+)
+
+`
diff --git a/internal/release.go b/internal/useragent/generator.go
similarity index 54%
rename from internal/release.go
rename to internal/useragent/generator.go
index b03e62b2..bfa2e406 100644
--- a/internal/release.go
+++ b/internal/useragent/generator.go
@@ -7,107 +7,123 @@ import (
 	"go/format"
 	"go/parser"
 	"go/token"
-	"log"
 	"os"
 	"regexp"
 	"strconv"
 	"strings"
 	"text/template"
-
-	"github.com/urfave/cli/v2"
 )
 
-const sourceFile = "./acme/api/internal/sender/useragent.go"
-
-const uaTemplate = `package sender
-
-// CODE GENERATED AUTOMATICALLY
-// THIS FILE MUST NOT BE EDITED BY HAND
-
-const (
-	// ourUserAgent is the User-Agent of this underlying library package.
-	ourUserAgent = "xenolf-acme/{{ .version }}"
-
-	// ourUserAgentComment is part of the UA comment linked to the version status of this underlying library package.
-	// values: detach|release
-	// NOTE: Update this with each tagged release.
-	ourUserAgentComment = "{{ .comment }}"
-)
-
-`
-
-func main() {
-	app := cli.NewApp()
-	app.Name = "lego-releaser"
-	app.Usage = "Lego releaser"
-	app.HelpName = "releaser"
-	app.Commands = []*cli.Command{
-		{
-			Name:   "release",
-			Usage:  "Update file for a release",
-			Action: release,
-			Before: func(ctx *cli.Context) error {
-				mode := ctx.String("mode")
-				switch mode {
-				case "patch", "minor", "major":
-					return nil
-				default:
-					return fmt.Errorf("invalid mode: %s", mode)
-				}
-			},
-			Flags: []cli.Flag{
-				&cli.StringFlag{
-					Name:    "mode",
-					Aliases: []string{"m"},
-					Value:   "patch",
-					Usage:   "The release mode: patch|minor|major",
-				},
-			},
-		},
-		{
-			Name:   "detach",
-			Usage:  "Update file post release",
-			Action: detach,
-		},
-	}
-
-	err := app.Run(os.Args)
-	if err != nil {
-		log.Fatal(err)
-	}
+type Generator struct {
+	baseUserAgent string
+	template      string
+	sourcePath    string
 }
 
-func release(ctx *cli.Context) error {
-	mode := ctx.String("mode")
+func NewGenerator(baseUserAgent string, tmpl string, sourcePath string) *Generator {
+	return &Generator{baseUserAgent: baseUserAgent, template: tmpl, sourcePath: sourcePath}
+}
 
+func (g *Generator) Release(mode string) error {
 	// Read file
-	data, err := readUserAgentFile(sourceFile)
+	data, err := readUserAgentFile(g.sourcePath)
 	if err != nil {
 		return err
 	}
 
 	// Bump version
-	newVersion, err := bumpVersion(data["ourUserAgent"], mode)
+	newVersion, err := g.bumpVersion(data["ourUserAgent"], mode)
 	if err != nil {
 		return err
 	}
 
 	// Write file
 	comment := "release" // detach|release
-	return writeUserAgentFile(sourceFile, newVersion, comment)
+
+	return g.writeUserAgentFile(g.sourcePath, newVersion, comment)
 }
 
-func detach(_ *cli.Context) error {
+func (g *Generator) Detach() error {
 	// Read file
-	data, err := readUserAgentFile(sourceFile)
+	data, err := readUserAgentFile(g.sourcePath)
 	if err != nil {
 		return err
 	}
 
 	// Write file
-	version := strings.TrimPrefix(data["ourUserAgent"], "xenolf-acme/")
+	version := strings.TrimPrefix(data["ourUserAgent"], g.baseUserAgent)
 	comment := "detach"
-	return writeUserAgentFile(sourceFile, version, comment)
+
+	return g.writeUserAgentFile(g.sourcePath, version, comment)
+}
+
+func (g *Generator) writeUserAgentFile(filename, version, comment string) error {
+	tmpl, err := template.New("ua").Parse(g.template)
+	if err != nil {
+		return err
+	}
+
+	b := &bytes.Buffer{}
+	err = tmpl.Execute(b, map[string]string{
+		"version": version,
+		"comment": comment,
+	})
+	if err != nil {
+		return err
+	}
+
+	source, err := format.Source(b.Bytes())
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(filename, source, 0o644)
+}
+
+func (g *Generator) bumpVersion(userAgent, mode string) (string, error) {
+	prevVersion := strings.TrimPrefix(userAgent, g.baseUserAgent)
+
+	allString := regexp.MustCompile(`(\d+)\.(\d+)\.(\d+)`).FindStringSubmatch(prevVersion)
+
+	if len(allString) != 4 {
+		return "", fmt.Errorf("invalid version format: %s", prevVersion)
+	}
+
+	switch mode {
+	case "patch":
+		patch, err := strconv.Atoi(allString[3])
+		if err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("%s.%s.%d", allString[1], allString[2], patch+1), nil
+	case "minor":
+		minor, err := strconv.Atoi(allString[2])
+		if err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("%s.%d.0", allString[1], minor+1), nil
+	case "major":
+		major, err := strconv.Atoi(allString[1])
+		if err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("%d.0.0", major+1), nil
+	default:
+		return "", fmt.Errorf("invalid mode: %s", mode)
+	}
+}
+
+func readUserAgentFile(filename string) (map[string]string, error) {
+	fset := token.NewFileSet()
+	file, err := parser.ParseFile(fset, filename, nil, parser.AllErrors)
+	if err != nil {
+		return nil, err
+	}
+
+	v := visitor{data: make(map[string]string)}
+	ast.Walk(v, file)
+
+	return v.data, nil
 }
 
 type visitor struct {
@@ -152,72 +168,3 @@ func (v visitor) Visit(n ast.Node) ast.Visitor {
 	}
 	return v
 }
-
-func readUserAgentFile(filename string) (map[string]string, error) {
-	fset := token.NewFileSet()
-	file, err := parser.ParseFile(fset, filename, nil, parser.AllErrors)
-	if err != nil {
-		return nil, err
-	}
-
-	v := visitor{data: make(map[string]string)}
-	ast.Walk(v, file)
-
-	return v.data, nil
-}
-
-func writeUserAgentFile(filename, version, comment string) error {
-	tmpl, err := template.New("ua").Parse(uaTemplate)
-	if err != nil {
-		return err
-	}
-
-	b := &bytes.Buffer{}
-	err = tmpl.Execute(b, map[string]string{
-		"version": version,
-		"comment": comment,
-	})
-	if err != nil {
-		return err
-	}
-
-	source, err := format.Source(b.Bytes())
-	if err != nil {
-		return err
-	}
-
-	return os.WriteFile(filename, source, 0o644)
-}
-
-func bumpVersion(userAgent, mode string) (string, error) {
-	prevVersion := strings.TrimPrefix(userAgent, "xenolf-acme/")
-
-	allString := regexp.MustCompile(`(\d+)\.(\d+)\.(\d+)`).FindStringSubmatch(prevVersion)
-
-	if len(allString) != 4 {
-		return "", fmt.Errorf("invalid version format: %s", prevVersion)
-	}
-
-	switch mode {
-	case "patch":
-		patch, err := strconv.Atoi(allString[3])
-		if err != nil {
-			return "", err
-		}
-		return fmt.Sprintf("%s.%s.%d", allString[1], allString[2], patch+1), nil
-	case "minor":
-		minor, err := strconv.Atoi(allString[2])
-		if err != nil {
-			return "", err
-		}
-		return fmt.Sprintf("%s.%d.0", allString[1], minor+1), nil
-	case "major":
-		major, err := strconv.Atoi(allString[1])
-		if err != nil {
-			return "", err
-		}
-		return fmt.Sprintf("%d.0.0", major+1), nil
-	default:
-		return "", fmt.Errorf("invalid mode: %s", mode)
-	}
-}
diff --git a/internal/useragent/main.go b/internal/useragent/main.go
new file mode 100644
index 00000000..9add82aa
--- /dev/null
+++ b/internal/useragent/main.go
@@ -0,0 +1,84 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/urfave/cli/v2"
+)
+
+func main() {
+	app := cli.NewApp()
+	app.Name = "lego-releaser"
+	app.Usage = "Lego releaser"
+	app.HelpName = "releaser"
+	app.Commands = []*cli.Command{
+		{
+			Name:   "release",
+			Usage:  "Update file for a release",
+			Action: release,
+			Before: func(ctx *cli.Context) error {
+				mode := ctx.String("mode")
+				switch mode {
+				case "patch", "minor", "major":
+					return nil
+				default:
+					return fmt.Errorf("invalid mode: %s", mode)
+				}
+			},
+			Flags: []cli.Flag{
+				&cli.StringFlag{
+					Name:    "mode",
+					Aliases: []string{"m"},
+					Value:   "patch",
+					Usage:   "The release mode: patch|minor|major",
+				},
+			},
+		},
+		{
+			Name:   "detach",
+			Usage:  "Update file post release",
+			Action: detach,
+		},
+	}
+
+	err := app.Run(os.Args)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func release(ctx *cli.Context) error {
+	mode := ctx.String("mode")
+
+	generators := []*Generator{
+		NewGenerator(senderBaseUserAgent, senderTemplate, senderSourceFile),
+		NewGenerator(dnsBaseUserAgent, dnsTemplate, dnsSourceFile),
+	}
+
+	for _, generator := range generators {
+		err := generator.Release(mode)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func detach(_ *cli.Context) error {
+	generators := []*Generator{
+		NewGenerator(senderBaseUserAgent, senderTemplate, senderSourceFile),
+		NewGenerator(dnsBaseUserAgent, dnsTemplate, dnsSourceFile),
+	}
+
+	for _, generator := range generators {
+		err := generator.Detach()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/providers/dns/dnsimple/dnsimple.go b/providers/dns/dnsimple/dnsimple.go
index 4a5b8788..0c1d3067 100644
--- a/providers/dns/dnsimple/dnsimple.go
+++ b/providers/dns/dnsimple/dnsimple.go
@@ -11,6 +11,7 @@ import (
 	"github.com/dnsimple/dnsimple-go/dnsimple"
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	"golang.org/x/oauth2"
 )
 
@@ -77,7 +78,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 
 	ts := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: config.AccessToken})
 	client := dnsimple.NewClient(oauth2.NewClient(context.Background(), ts))
-	client.SetUserAgent("go-acme/lego")
+	client.SetUserAgent(useragent.Get())
 
 	if config.BaseURL != "" {
 		client.BaseURL = config.BaseURL
diff --git a/providers/dns/epik/internal/client.go b/providers/dns/epik/internal/client.go
index 1a802dfd..9a538545 100644
--- a/providers/dns/epik/internal/client.go
+++ b/providers/dns/epik/internal/client.go
@@ -11,14 +11,11 @@ import (
 	"time"
 
 	"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 )
 
 const defaultBaseURL = "https://usersapiv2.epik.com/v2"
 
-// The API server don't support User-Agent starting with `go-`, then this User-Agent is different from the other implementation.
-// https://github.com/go-acme/lego/issues/2268#issuecomment-2394007004
-const defaultUserAgent = "goacme/lego"
-
 // Client the Epik API client.
 type Client struct {
 	signature string
@@ -101,7 +98,7 @@ func (c Client) RemoveHostRecord(ctx context.Context, domain string, recordID st
 }
 
 func (c Client) do(req *http.Request, result any) error {
-	req.Header.Set("User-Agent", defaultUserAgent)
+	useragent.SetHeader(req.Header)
 
 	resp, err := c.HTTPClient.Do(req)
 	if err != nil {
diff --git a/providers/dns/exoscale/exoscale.go b/providers/dns/exoscale/exoscale.go
index 6e7c026a..c9402a75 100644
--- a/providers/dns/exoscale/exoscale.go
+++ b/providers/dns/exoscale/exoscale.go
@@ -12,6 +12,7 @@ import (
 	"github.com/exoscale/egoscale/v3/credentials"
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 )
 
 // Environment variables names.
@@ -85,7 +86,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 		credentials.NewStaticCredentials(config.APIKey, config.APISecret),
 		egoscale.ClientOptWithEndpoint(egoscale.Endpoint(config.Endpoint)),
 		egoscale.ClientOptWithHTTPClient(&http.Client{Timeout: config.HTTPTimeout}),
-		egoscale.ClientOptWithUserAgent("go-acme/lego"),
+		egoscale.ClientOptWithUserAgent(useragent.Get()),
 	)
 	if err != nil {
 		return nil, fmt.Errorf("exoscale: initializing client: %w", err)
diff --git a/providers/dns/infoblox/infoblox.go b/providers/dns/infoblox/infoblox.go
index 6eda174d..87a443e4 100644
--- a/providers/dns/infoblox/infoblox.go
+++ b/providers/dns/infoblox/infoblox.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	infoblox "github.com/infobloxopen/infoblox-go-client"
 )
 
@@ -31,10 +32,7 @@ const (
 	EnvHTTPTimeout        = envNamespace + "HTTP_TIMEOUT"
 )
 
-const (
-	defaultPoolConnections = 10
-	defaultUserAgent       = "go-acme/lego"
-)
+const defaultPoolConnections = 10
 
 // Config is used to configure the creation of the DNSProvider.
 type Config struct {
@@ -151,7 +149,7 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 
 	defer func() { _ = connector.Logout() }()
 
-	objectManager := infoblox.NewObjectManager(connector, defaultUserAgent, "")
+	objectManager := infoblox.NewObjectManager(connector, useragent.Get(), "")
 
 	record, err := objectManager.CreateTXTRecord(dns01.UnFqdn(info.EffectiveFQDN), info.Value, uint(d.config.TTL), d.config.DNSView)
 	if err != nil {
@@ -176,7 +174,7 @@ func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
 
 	defer func() { _ = connector.Logout() }()
 
-	objectManager := infoblox.NewObjectManager(connector, defaultUserAgent, "")
+	objectManager := infoblox.NewObjectManager(connector, useragent.Get(), "")
 
 	// gets the record's unique ref from when we created it
 	d.recordRefsMu.Lock()
diff --git a/providers/dns/internal/useragent/useragent.go b/providers/dns/internal/useragent/useragent.go
new file mode 100644
index 00000000..8ecbfccc
--- /dev/null
+++ b/providers/dns/internal/useragent/useragent.go
@@ -0,0 +1,29 @@
+// Code generated by 'internal/useragent'; DO NOT EDIT.
+
+package useragent
+
+import (
+	"fmt"
+	"net/http"
+	"runtime"
+)
+
+const (
+	// ourUserAgent is the User-Agent of this underlying library package.
+	ourUserAgent = "goacme-lego/4.19.2"
+
+	// ourUserAgentComment is part of the UA comment linked to the version status of this underlying library package.
+	// values: detach|release
+	// NOTE: Update this with each tagged release.
+	ourUserAgentComment = "detach"
+)
+
+// Get builds and returns the User-Agent string.
+func Get() string {
+	return fmt.Sprintf("%s (%s; %s; %s)", ourUserAgent, ourUserAgentComment, runtime.GOOS, runtime.GOARCH)
+}
+
+// SetHeader sets the User-Agent header.
+func SetHeader(h http.Header) {
+	h.Set("User-Agent", Get())
+}
diff --git a/providers/dns/linode/linode.go b/providers/dns/linode/linode.go
index 54af31e2..f9d77ebc 100644
--- a/providers/dns/linode/linode.go
+++ b/providers/dns/linode/linode.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	"github.com/linode/linodego"
 	"golang.org/x/oauth2"
 )
@@ -99,7 +100,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 	}
 
 	client := linodego.NewClient(oauth2Client)
-	client.SetUserAgent("go-acme/lego https://github.com/linode/linodego")
+	client.SetUserAgent(useragent.Get())
 
 	return &DNSProvider{config: config, client: &client}, nil
 }
diff --git a/providers/dns/ovh/ovh.go b/providers/dns/ovh/ovh.go
index a35b80c8..c86d6129 100644
--- a/providers/dns/ovh/ovh.go
+++ b/providers/dns/ovh/ovh.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	"github.com/ovh/go-ovh/ovh"
 )
 
@@ -271,7 +272,7 @@ func newClient(config *Config) (*ovh.Client, error) {
 		return nil, fmt.Errorf("new client: %w", err)
 	}
 
-	client.UserAgent = "go-acme/lego"
+	client.UserAgent = useragent.Get()
 
 	return client, nil
 }
diff --git a/providers/dns/sakuracloud/sakuracloud.go b/providers/dns/sakuracloud/sakuracloud.go
index f0c8dc92..0b919968 100644
--- a/providers/dns/sakuracloud/sakuracloud.go
+++ b/providers/dns/sakuracloud/sakuracloud.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	client "github.com/sacloud/api-client-go"
 	"github.com/sacloud/iaas-api-go"
 	"github.com/sacloud/iaas-api-go/helper/api"
@@ -95,7 +96,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 			AccessToken:       config.Token,
 			AccessTokenSecret: config.Secret,
 			HttpClient:        config.HTTPClient,
-			UserAgent:         fmt.Sprintf("go-acme/lego %s", iaas.DefaultUserAgent),
+			UserAgent:         fmt.Sprintf("%s %s", iaas.DefaultUserAgent, useragent.Get()),
 		},
 	}
 
diff --git a/providers/dns/scaleway/scaleway.go b/providers/dns/scaleway/scaleway.go
index 70b8a8ea..d3d027d9 100644
--- a/providers/dns/scaleway/scaleway.go
+++ b/providers/dns/scaleway/scaleway.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	scwdomain "github.com/scaleway/scaleway-sdk-go/api/domain/v2beta1"
 	"github.com/scaleway/scaleway-sdk-go/scw"
 )
@@ -100,7 +101,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 
 	configuration := []scw.ClientOption{
 		scw.WithAuth(config.AccessKey, config.Token),
-		scw.WithUserAgent("Scaleway Lego's provider"),
+		scw.WithUserAgent(useragent.Get()),
 	}
 
 	if config.ProjectID != "" {
diff --git a/providers/dns/selectelv2/selectelv2.go b/providers/dns/selectelv2/selectelv2.go
index 4cc6e941..8e114e24 100644
--- a/providers/dns/selectelv2/selectelv2.go
+++ b/providers/dns/selectelv2/selectelv2.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	selectelapi "github.com/selectel/domains-go/pkg/v2"
 	"github.com/selectel/go-selvpcclient/v3/selvpcclient"
 )
@@ -25,8 +26,6 @@ const (
 	defaultHTTPTimeout        = 30 * time.Second
 )
 
-const defaultUserAgent = "go-acme/lego"
-
 const (
 	envNamespace = "SELECTELV2_"
 
@@ -114,7 +113,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 	}
 
 	headers := http.Header{}
-	headers.Set("User-Agent", defaultUserAgent)
+	useragent.SetHeader(headers)
 
 	return &DNSProvider{
 		baseClient: selectelapi.NewClient(config.BaseURL, config.HTTPClient, headers),
diff --git a/providers/dns/ultradns/ultradns.go b/providers/dns/ultradns/ultradns.go
index 95cf9569..369af456 100644
--- a/providers/dns/ultradns/ultradns.go
+++ b/providers/dns/ultradns/ultradns.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	"github.com/ultradns/ultradns-go-sdk/pkg/client"
 	"github.com/ultradns/ultradns-go-sdk/pkg/record"
 	"github.com/ultradns/ultradns-go-sdk/pkg/rrset"
@@ -24,12 +25,10 @@ const (
 	EnvTTL                = envNamespace + "TTL"
 	EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
 	EnvPollingInterval    = envNamespace + "POLLING_INTERVAL"
-
-	// Default variables names.
-	defaultEndpoint  = "https://api.ultradns.com/"
-	defaultUserAgent = "go-acme/lego"
 )
 
+const defaultEndpoint = "https://api.ultradns.com/"
+
 // DNSProvider implements the challenge.Provider interface.
 type DNSProvider struct {
 	config *Config
@@ -83,7 +82,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 		Username:  config.Username,
 		Password:  config.Password,
 		HostURL:   config.Endpoint,
-		UserAgent: defaultUserAgent,
+		UserAgent: useragent.Get(),
 	}
 
 	uClient, err := client.NewClient(ultraConfig)
diff --git a/providers/dns/vinyldns/vinyldns.go b/providers/dns/vinyldns/vinyldns.go
index dca58fb9..f5f0d233 100644
--- a/providers/dns/vinyldns/vinyldns.go
+++ b/providers/dns/vinyldns/vinyldns.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/go-acme/lego/v4/challenge/dns01"
 	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
 	"github.com/vinyldns/go-vinyldns/vinyldns"
 )
 
@@ -84,7 +85,7 @@ func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
 		AccessKey: config.AccessKey,
 		SecretKey: config.SecretKey,
 		Host:      config.Host,
-		UserAgent: "go-acme/lego",
+		UserAgent: useragent.Get(),
 	})
 
 	client.HTTPClient.Timeout = 30 * time.Second