diff --git a/requirements.txt b/requirements.txt
index 3ace5e5..b2c0066 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ scipy==0.19.0
 matplotlib==2.0.1
 Pillow==8.1.1
 gpxpy==1.1.2
-lxml==4.6.3
+lxml==4.6.5