diff --git a/requirements.txt b/requirements.txt
index a64f71c..10d3f1a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy==1.12.1
 regex==2017.11.9
 tqdm==4.14.0
-lxml==4.6.3
+lxml==4.6.5
 reach==2.0.2
 scikit_learn==0.19.1