diff --git a/arknights-data-science/requirements.txt b/arknights-data-science/requirements.txt
index 0befa0d..059b17a 100644
--- a/arknights-data-science/requirements.txt
+++ b/arknights-data-science/requirements.txt
@@ -14,7 +14,7 @@ configparser==5.0.2; python_version >= '3.6'
 crayons==0.4.0

 idna==3.2; python_version >= '3.0'

 joblib==1.0.1; python_version >= '3.6'

-lxml==4.6.3

+lxml==4.9.1

 numpy==1.21.1; python_version >= '3.7'

 pandas==1.3.1

 python-dateutil==2.8.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'