diff --git a/02_Python_Programming/requirements.txt b/02_Python_Programming/requirements.txt
index 91274a2..08e7016 100644
--- a/02_Python_Programming/requirements.txt
+++ b/02_Python_Programming/requirements.txt
@@ -18,7 +18,7 @@ h5py==2.10.0
 idna==2.8
 Keras-Preprocessing==1.1.0
 kiwisolver==1.1.0
-lxml==4.4.2
+lxml==4.6.3
 Markdown==3.2.1
 matplotlib==3.1.2
 mplfinance==0.12.3a3