diff --git a/requirements.txt b/requirements.txt
index 2671e2cf8b..0962bafcb4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ beautifulsoup4==4.9.3
 defcon==0.7.2
 font-v==1.0.5
 fontTools[ufo,lxml,unicode]==4.18.2
-lxml==4.6.2
+lxml==4.6.3
 opentype-sanitizer==8.1.3.post1
 pip-api==0.0.18
 protobuf==3.14.0