diff --git a/requirements.txt b/requirements.txt
index 2b1f6eb..825d553 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ pyparsing==2.2.0
 pyrouge==0.1.3
 python-dateutil==2.6.1
 pytz==2018.3
-PyYAML==3.12
+PyYAML==5.4
 requests>=2.20.0
 six==1.11.0
 subprocess32==3.2.7