diff --git a/go.mod b/go.mod
index a483c20..e8354b9 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,10 @@ require (
 
 require github.com/adrg/strutil v0.3.1
 
-require github.com/gin-contrib/zap v1.1.3 // indirect
+require (
+	github.com/gin-contrib/zap v1.1.3 // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
+)
 
 require (
 	ariga.io/atlas v0.19.1-0.20240203083654-5948b60a8e43 // indirect
@@ -74,6 +77,7 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/natefinch/lumberjack v2.0.0+incompatible
 	github.com/pkg/errors v0.9.1
 	github.com/spf13/viper v1.19.0
 	go.uber.org/multierr v1.11.0 // indirect
diff --git a/go.sum b/go.sum
index deb1548..ca68294 100644
--- a/go.sum
+++ b/go.sum
@@ -104,6 +104,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/natefinch/lumberjack v2.0.0+incompatible h1:4QJd3OLAMgj7ph+yZTuX13Ld4UpgHp07nNdFX7mqFfM=
+github.com/natefinch/lumberjack v2.0.0+incompatible/go.mod h1:Wi9p2TTF5DG5oU+6YfsmYQpsTIOm0B1VNzQg9Mw6nPk=
 github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
 github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -195,6 +197,8 @@ gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntN
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
 gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST95x9zc=
+gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/log/log.go b/log/log.go
index d6c6fa0..97fec4e 100644
--- a/log/log.go
+++ b/log/log.go
@@ -4,6 +4,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/natefinch/lumberjack"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )
@@ -16,20 +17,22 @@ const dataPath = "./data"
 func init() {
 	atom = zap.NewAtomicLevel()
 	atom.SetLevel(zap.DebugLevel)
-	filer, _, err := zap.Open(filepath.Join(dataPath, "polaris.log"))
-	if err != nil {
-		panic(err)
-	}
+
+	w := zapcore.AddSync(&lumberjack.Logger{
+		Filename:   filepath.Join(dataPath, "logs", "polaris.log"),
+		MaxSize:    50, // megabytes
+		MaxBackups: 3,
+		MaxAge:     30, // days
+	})
+
 	consoleEncoder := zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
-	
-	logger := zap.New(zapcore.NewCore(consoleEncoder, zapcore.Lock(filer), atom), zap.AddCallerSkip(1))
+
+	logger := zap.New(zapcore.NewCore(consoleEncoder, w, atom), zap.AddCallerSkip(1))
 
 	sugar = logger.Sugar()
 
 }
 
-
-
 func SetLogLevel(l string) {
 	switch strings.TrimSpace(strings.ToLower(l)) {
 	case "debug":
diff --git a/server/setting.go b/server/setting.go
index fbf256c..984844e 100644
--- a/server/setting.go
+++ b/server/setting.go
@@ -14,6 +14,7 @@ import (
 type GeneralSettings struct {
 	TmdbApiKey  string `json:"tmdb_api_key"`
 	DownloadDir string `json:"download_dir"`
+	LogLevel    string `json:"log_level"`
 }
 
 func (s *Server) SetSetting(c *gin.Context) (interface{}, error) {
@@ -32,6 +33,9 @@ func (s *Server) SetSetting(c *gin.Context) (interface{}, error) {
 			return nil, errors.Wrap(err, "save download dir")
 		}
 	}
+	if in.LogLevel != "" {
+		log.SetLogLevel(in.LogLevel)
+	}
 	return nil, nil
 }
 
@@ -97,7 +101,6 @@ func (s *Server) getDownloadClient() (*transmission.Client, error) {
 	return trc, nil
 }
 
-
 type downloadClientIn struct {
 	Name           string `json:"name" binding:"required"`
 	URL            string `json:"url" binding:"required"`
@@ -113,8 +116,8 @@ func (s *Server) AddDownloadClient(c *gin.Context) (interface{}, error) {
 	}
 	//test connection
 	_, err := transmission.NewClient(transmission.Config{
-		URL: in.URL,
-		User: in.User,
+		URL:      in.URL,
+		User:     in.User,
 		Password: in.Password,
 	})
 	if err != nil {
@@ -155,4 +158,4 @@ func (s *Server) SetLogLevel(c *gin.Context) (interface{}, error) {
 	}
 	log.SetLogLevel(in.Level)
 	return "success", nil
-}
\ No newline at end of file
+}