diff --git a/requirements.txt b/requirements.txt
index 1aa0e3d..d85e71f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ finance==0.2502
 idna==2.9
 iexfinance==0.4.3
 kiwisolver==1.2.0
-lxml==4.5.1
+lxml==4.9.1
 matplotlib==3.2.2
 mplcursors==0.3
 multitasking==0.0.9