diff --git a/go.mod b/go.mod
index 4d68df5..95024fd 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module XProxy
 go 1.18
 
 require (
+	github.com/robfig/cron v1.2.0 // indirect
 	github.com/sirupsen/logrus v1.9.0 // indirect
 	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 9b490be..6fcb3f3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,8 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/robfig/cron v1.2.0 h1:ZjScXvvxeQ63Dbyxy76Fj3AT3Ut0aKsyd2/tl3DTMuQ=
+github.com/robfig/cron v1.2.0/go.mod h1:JGuDeoQd7Z6yL4zQhZ3OPEVHB7fL6Ka6skscFHfmt2k=
 github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
 github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
diff --git a/src/config.go b/src/config.go
index 16491df..2fb47e1 100644
--- a/src/config.go
+++ b/src/config.go
@@ -22,19 +22,23 @@ type NetConfig struct {
 }
 
 type Config struct {
+    Update struct {
+        Cron string            `yaml:"cron"`
+        Url  map[string]string `yaml:"url"`
+    } `yaml:"update"`
     Proxy struct {
         Sniff    bool           `yaml:"sniff"`
         Redirect bool           `yaml:"redirect"`
         Http     map[string]int `yaml:"http"`
         Socks    map[string]int `yaml:"socks"`
         AddOn    []interface{}  `yaml:"addon"`
-    }
+    } `yaml:"proxy"`
     Network struct {
         DNS    []string  `yaml:"dns"`    // system dns server
         ByPass []string  `yaml:"bypass"` // cidr bypass list
         IPv4   NetConfig `yaml:"ipv4"`   // ipv4 network configure
         IPv6   NetConfig `yaml:"ipv6"`   // ipv6 network configure
-    }
+    } `yaml:"network"`
 }
 
 func isIP(ipAddr string, isCidr bool) bool {
@@ -113,4 +117,9 @@ func loadConfig(rawConfig []byte) {
     log.Infof("Socks5 inbounds -> %v", socksInbounds)
     addOnInbounds = config.Proxy.AddOn
     log.Infof("Add-on inbounds -> %v", addOnInbounds)
+
+    updateCron = config.Update.Cron
+    log.Infof("Update cron -> %s", updateCron)
+    updateUrls = config.Update.Url
+    log.Infof("Update url -> %v", updateUrls)
 }
diff --git a/src/load.go b/src/load.go
index 195322a..5b2d60a 100644
--- a/src/load.go
+++ b/src/load.go
@@ -5,6 +5,7 @@ import (
     log "github.com/sirupsen/logrus"
     "io"
     "io/ioutil"
+    "net/http"
     "os"
     "os/exec"
     "strings"
@@ -127,6 +128,30 @@ func copyFile(source string, target string) {
     }
 }
 
+func downloadFile(url string, file string) bool {
+    log.Debugf("File download %s => %s", url, file)
+    resp, err := http.Get(url)
+    if err != nil {
+        log.Errorf("Download %s error -> %v", url, err)
+        return false
+    }
+    defer func(Body io.ReadCloser) {
+        _ = Body.Close()
+    }(resp.Body)
+    out, err := os.OpenFile(file, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
+    if err != nil {
+        _ = resp.Body.Close()
+        log.Panicf("Open %s error -> %v", file, err)
+    }
+    _, err = io.Copy(out, resp.Body)
+    _ = resp.Body.Close()
+    if err != nil {
+        log.Panicf("File %s save error -> %v", file, err)
+    }
+    log.Infof("Download success `%s` => `%s`", url, file)
+    return true
+}
+
 func saveConfig(configDir string, caption string, content string, overwrite bool) {
     filePath := configDir + "/" + caption + ".json"
     if !overwrite && isFileExist(filePath) { // file exist and don't overwrite
@@ -250,3 +275,12 @@ func loadGeoSite(assetDir string) {
     createFolder(assetDir)
     extractGeoFile(assetFile, "geosite.dat", assetDir)
 }
+
+func updateAssets(assetDir string) {
+    if len(updateUrls) != 0 {
+        log.Info("Start update assets")
+        for file, url := range updateUrls {
+            downloadFile(url, assetDir+"/"+file)
+        }
+    }
+}
diff --git a/src/main.go b/src/main.go
index ec854c1..d198f20 100644
--- a/src/main.go
+++ b/src/main.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+    "github.com/robfig/cron"
     log "github.com/sirupsen/logrus"
     "os"
     "os/signal"
@@ -14,6 +15,9 @@ var v6RouteTable = 106
 var v4TProxyPort = 7288
 var v6TProxyPort = 7289
 
+var updateCron string
+var updateUrls map[string]string
+
 var enableSniff bool
 var enableRedirect bool
 var httpInbounds map[string]int
@@ -37,11 +41,15 @@ func main() {
         panic(err)
     }
     loadConfig(content)
-    loadProxy("/etc/xproxy/config", "/xproxy")
 
-    loadGeoIp("/xproxy/assets")
+    loadProxy("/etc/xproxy/config", "/xproxy")
     loadGeoSite("/xproxy/assets")
-    // TODO: auto-update assets file (by cron command)
+    loadGeoIp("/xproxy/assets")
+    autoUpdate := cron.New()
+    _ = autoUpdate.AddFunc(updateCron, func() {
+        updateAssets("/xproxy/assets")
+    })
+    autoUpdate.Start()
 
     loadDns()
     loadNetwork()
@@ -52,14 +60,6 @@ func main() {
     xray := newProcess("xray", "-confdir", "/etc/xproxy/config")
     xray.startProcess(true, true)
     subProcess = append(subProcess, xray)
-
-    //sleep := newProcess("sleep", "1000")
-    //sleep.startProcess(true, true)
-    //subProcess = append(subProcess, sleep)
-    //
-    //empty := newProcess("empty")
-    //subProcess = append(subProcess, empty)
-
     daemon()
 
     sigExit := make(chan os.Signal, 1)
diff --git a/test.yml b/test.yml
index 569ce1b..e210bbf 100644
--- a/test.yml
+++ b/test.yml
@@ -31,3 +31,9 @@ network:
     - fc00::/7
     - fe80::/10
     - ff00::/8
+
+update:
+  cron: "0 */1 * * * *"
+  url:
+    geoip.dat: "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat"
+    geosite.dat: "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat"