diff --git a/lesson01/duanhaiquan/devops/requirements.txt b/lesson01/duanhaiquan/devops/requirements.txt
index a5a7fbe..5eeb062 100644
--- a/lesson01/duanhaiquan/devops/requirements.txt
+++ b/lesson01/duanhaiquan/devops/requirements.txt
@@ -1,4 +1,4 @@
-Django==2.2
+Django==2.2.22
 django-simpleui==4.0.3
 PyMySQL==0.9.3
 pytz==2020.1