diff --git a/requirements.txt b/requirements.txt
index 8878468..7efacb3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 requests>=2.5.0,<3.0
 websocket-client==0.44.0
 beautifulsoup4==4.6.0
-lxml==3.8.0
+lxml==4.6.3
 jinja2>=2.10.1
-slackclient==1.3.1
+slackclient==2.9.3