diff --git a/requirements.txt b/requirements.txt
index 431d23e..4ad3efe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ beautifulsoup4==4.8.1
 certifi==2019.9.11
 chardet==3.0.4
 idna==2.8
-lxml==4.4.1
+lxml==4.9.1
 pyshp==2.1.0
 requests==2.22.0
 soupsieve==1.9.4