diff --git a/.goreleaser.yml b/.goreleaser.yml
index 3fa968a..5ce855a 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -19,9 +19,9 @@ builds:
       - 7
     ldflags:
       - -s -w
-      - -X "main.Version={{ .Version }}"
-      - -X "main.GitCommit={{ .ShortCommit }}"
-      - -X "main.Timestamp={{ .Timestamp }}"
+      - -X "github.com/l3uddz/nabarr/build.Version={{ .Version }}"
+      - -X "github.com/l3uddz/nabarr/build.GitCommit={{ .ShortCommit }}"
+      - -X "github.com/l3uddz/nabarr/build.Timestamp={{ .Timestamp }}"
     flags:
       - -trimpath
 
diff --git a/Makefile b/Makefile
index 40eaea6..ddbf772 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ ${BUILD_PATH}/${CMD}: ${GO_FILES} go.sum
 	CGO_ENABLED=${CGO} go build \
 		-mod vendor \
 		-trimpath \
-		-ldflags "-s -w -X main.Version=${VERSION} -X main.GitCommit=${GIT_COMMIT} -X main.Timestamp=${TIMESTAMP}" \
+		-ldflags "-s -w -X github.com/l3uddz/nabarr/build.Version=${VERSION} -X github.com/l3uddz/nabarr/build.GitCommit=${GIT_COMMIT} -X github.com/l3uddz/nabarr/build.Timestamp=${TIMESTAMP}" \
 		-o ${BUILD_PATH}/${CMD} \
 		./cmd/nabarr
 
diff --git a/build/build.go b/build/build.go
new file mode 100644
index 0000000..bf8c3a2
--- /dev/null
+++ b/build/build.go
@@ -0,0 +1,7 @@
+package build
+
+var (
+	Version   string
+	Timestamp string
+	GitCommit string
+)
diff --git a/cmd/nabarr/main.go b/cmd/nabarr/main.go
index 0aaa5a4..15f3fab 100644
--- a/cmd/nabarr/main.go
+++ b/cmd/nabarr/main.go
@@ -6,6 +6,7 @@ import (
 	"github.com/alecthomas/kong"
 	"github.com/goccy/go-yaml"
 	"github.com/l3uddz/nabarr"
+	"github.com/l3uddz/nabarr/build"
 	"github.com/l3uddz/nabarr/cache"
 	"github.com/l3uddz/nabarr/cmd/nabarr/pvr"
 	"github.com/l3uddz/nabarr/media"
@@ -28,10 +29,6 @@ type config struct {
 }
 
 var (
-	Version   string
-	Timestamp string
-	GitCommit string
-
 	// CLI
 	cli struct {
 		globals
@@ -67,7 +64,7 @@ func main() {
 			Compact: true,
 		}),
 		kong.Vars{
-			"version":     fmt.Sprintf("%s (%s@%s)", Version, GitCommit, Timestamp),
+			"version":     fmt.Sprintf("%s (%s@%s)", build.Version, build.GitCommit, build.Timestamp),
 			"config_file": filepath.Join(defaultConfigPath(), "config.yml"),
 			"cache_file":  filepath.Join(defaultConfigPath(), "cache"),
 			"log_file":    filepath.Join(defaultConfigPath(), "activity.log"),
diff --git a/cmd/nabarr/update.go b/cmd/nabarr/update.go
index 445f2cb..8435fd3 100644
--- a/cmd/nabarr/update.go
+++ b/cmd/nabarr/update.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/alecthomas/kong"
 	"github.com/blang/semver"
+	"github.com/l3uddz/nabarr/build"
 	"github.com/rhysd/go-github-selfupdate/selfupdate"
 	"os"
 )
@@ -15,7 +16,7 @@ func (u updateFlag) Decode(ctx *kong.DecodeContext) error { return nil }
 func (u updateFlag) IsBool() bool                         { return true }
 func (u updateFlag) BeforeApply(app *kong.Kong, vars kong.Vars) error {
 	// parse current version
-	v, err := semver.Parse(Version)
+	v, err := semver.Parse(build.Version)
 	if err != nil {
 		fmt.Printf("Failed parsing current build version: %v\n", err)
 		app.Exit(1)
@@ -33,7 +34,7 @@ func (u updateFlag) BeforeApply(app *kong.Kong, vars kong.Vars) error {
 
 	// check version
 	if !found || latest.Version.LTE(v) {
-		fmt.Printf("Already using the latest version: %v\n", Version)
+		fmt.Printf("Already using the latest version: %v\n", build.Version)
 		app.Exit(0)
 		return nil
 	}
diff --git a/util/http.go b/util/http.go
index 44dd2c3..4cfcafb 100644
--- a/util/http.go
+++ b/util/http.go
@@ -2,6 +2,7 @@ package util
 
 import (
 	"github.com/hashicorp/go-retryablehttp"
+	"github.com/l3uddz/nabarr/build"
 	"github.com/rs/zerolog"
 	"go.uber.org/ratelimit"
 	"net/http"
@@ -14,6 +15,9 @@ func NewRetryableHttpClient(timeout time.Duration, rl ratelimit.Limiter, log *ze
 	retryClient.RetryWaitMin = 1 * time.Second
 	retryClient.RetryWaitMax = 10 * time.Second
 	retryClient.RequestLogHook = func(l retryablehttp.Logger, request *http.Request, i int) {
+		// set user-agent
+		request.Header.Set("User-Agent", "nabarr/"+build.Version)
+
 		// rate limit
 		if rl != nil {
 			rl.Take()