diff --git a/requirements.txt b/requirements.txt
index 0d9a858..1290dcb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ ptop==1.0
 pycparser==2.19
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 requests==2.22.0
 scipy==1.2.1
 six==1.13.0