diff --git a/requirement.txt b/requirement.txt
index 0c9177f..d9362a6 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -89,7 +89,7 @@ libarchive-c==2.8
 lief==0.9.0
 llvmlite==0.26.0
 locket==0.2.0
-lxml==4.2.5
+lxml==4.6.5
 Mako==1.0.7
 MarkupSafe==1.1.0
 matplotlib==3.0.2