diff --git a/requirements.txt b/requirements.txt
index b6ef20e..d2e3410 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ python-telegram-bot==12.1.1
 python-xlib==0.23
 pytz==2018.9
 pyxdg==0.25
-PyYAML==3.13
+pyyaml>=4.2b1
 requests==2.21.0
 requests-unixsocket==0.1.5
 six==1.12.0