diff --git a/01_QuestionAnswering_Corpus/requirements.txt b/01_QuestionAnswering_Corpus/requirements.txt
index 3b8c5f3..2752daa 100644
--- a/01_QuestionAnswering_Corpus/requirements.txt
+++ b/01_QuestionAnswering_Corpus/requirements.txt
@@ -1,5 +1,5 @@
 argparse==1.2.1		
 cchardet==0.3.5		
-lxml==3.3.3		
+lxml==4.6.2		
 requests==2.2.1		
 wsgiref==0.1.2
\ No newline at end of file