diff --git a/requirements.txt b/requirements.txt
index 3ffdc66..c9d3a64 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ Pygments==2.7.4
 bpython==0.10.1
 certifi==0.0.8
 chardet==1.0.1
-lxml==4.6.5
+lxml==4.9.1
 nose==1.1.2
 oauthlib==0.1.3
 pyasn1==0.1.3