diff --git a/taiyangxue/python-op2/requirements.txt b/taiyangxue/python-op2/requirements.txt
index 0f3fed7..6d18d83 100644
--- a/taiyangxue/python-op2/requirements.txt
+++ b/taiyangxue/python-op2/requirements.txt
@@ -4,7 +4,7 @@ click==7.1.2
 Flask==1.1.2
 idna==2.10
 itsdangerous==1.1.0
-Jinja2==2.11.2
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 numpy==1.19.1
 pandas==1.1.1