diff --git a/tools/casign/casign.go b/tools/casign/casign.go
index f09c66fa..604641c0 100644
--- a/tools/casign/casign.go
+++ b/tools/casign/casign.go
@@ -22,9 +22,10 @@ func main() {
 
 	// 创建根证书模板
 	ca := &x509.Certificate{
-		SerialNumber:          big.NewInt(2023),
-		Subject:               pkix.Name{CommonName: "Root CA"},
-		NotBefore:             time.Now(),
+		SerialNumber: big.NewInt(2023),
+		Subject:      pkix.Name{CommonName: "Root CA"},
+		NotBefore:    time.Now(),
+		//NotAfter:              time.Now().AddDate(10, 0, 0), // 有效期为10年
 		NotAfter:              time.Now().AddDate(0, 0, 1), // 有效期为10年
 		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
 		BasicConstraintsValid: true,