diff --git a/SmartHome_Cacty/requirements.txt b/SmartHome_Cacty/requirements.txt
index e2818a3..d7ea86b 100644
--- a/SmartHome_Cacty/requirements.txt
+++ b/SmartHome_Cacty/requirements.txt
@@ -140,7 +140,7 @@ lief==0.9.0
 llvmlite==0.26.0
 locket==0.2.0
 log-symbols==0.0.14
-lxml==4.2.5
+lxml==4.9.1
 Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==3.0.2