diff --git a/README.md b/README.md
index 8dda58a..a5f1699 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 - 国内加速：
 
     ```shell
-    curl -L https://raw.staticdn.net/naiba/nezha/master/script/install.sh -o nezha.sh && chmod +x nezha.sh
+    curl -L https://raw.sevencdn.com/naiba/nezha/master/script/install.sh -o nezha.sh && chmod +x nezha.sh
     sudo ./nezha.sh
     ```
 
diff --git a/cmd/agent/main.go b/cmd/agent/main.go
index 01e72bb..430c791 100644
--- a/cmd/agent/main.go
+++ b/cmd/agent/main.go
@@ -48,7 +48,7 @@ var (
 	updateCh       = make(chan struct{}, 0)
 )
 
-const AGENT_UPGRADE = 55
+const agentUpgrade = 55
 
 func doSelfUpdate() {
 	defer func() {
@@ -67,7 +67,7 @@ func doSelfUpdate() {
 		log.Println("Current binary is the latest version", version)
 	} else {
 		log.Println("Successfully updated to version", latest.Version)
-		os.Exit(AGENT_UPGRADE)
+		os.Exit(agentUpgrade)
 	}
 }
 
diff --git a/script/install.sh b/script/install.sh
index 4e13fc9..11376a6 100755
--- a/script/install.sh
+++ b/script/install.sh
@@ -83,7 +83,7 @@ pre_check() {
 
     ## server location
     if curl -s api.myip.la/json | grep -q 'China'; then
-        GITHUB_RAW_URL="raw.staticdn.net"
+        GITHUB_RAW_URL="raw.sevencdn.com"
         GITHUB_URL="hub.fastgit.org"
     fi
 }