diff --git a/build/Dockerfile b/build/Dockerfile
index 79d5bd4..23c4837 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos:7.5.1804
+FROM centos:7.9.2009
 MAINTAINER pader "huangmnlove@163.com"
 
 # set environment