diff --git a/requirements.txt b/requirements.txt
index 6dfbde1..552cea3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ pytest==5.0.1
 python-dateutil==2.8.0
 pytorch-pretrained-bert==0.6.2
 pytz==2019.2
-PyYAML==5.1
+PyYAML==5.4
 regex==2019.6.8
 requests==2.22.0
 responses==0.10.6