diff --git a/requirements.txt b/requirements.txt
index 03db660..0fbc5b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 opencv_contrib_python==4.2.0.32
 tqdm==4.43.0
 numpy==1.18.1
-lxml==4.5.0
+lxml==4.9.1
 absl_py==0.9.0
 tensorflow_gpu==2.1.2
 matplotlib==3.1.3