diff --git a/requirements.txt b/requirements.txt
index 3ed26af..ee9fcd3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 beautifulsoup4>=4.4, <5.0
 requests>=2.5.3, <3.0
-lxml==4.5.0
+lxml>=4.5.0, <5
 aiohttp==2.3.1
 idna-ssl==1.1.0