diff --git a/Requirements.txt b/Requirements.txt
index 59deb2e..18c86c5 100644
--- a/Requirements.txt
+++ b/Requirements.txt
@@ -173,7 +173,7 @@ llvmlite==0.31.0
 lmdb==0.98
 lucid==0.3.8
 LunarCalendar==0.0.9
-lxml==4.6.3
+lxml==4.6.5
 Markdown==3.2.2
 MarkupSafe==1.1.1
 matplotlib==3.2.2