diff --git a/requirements.txt b/requirements.txt
index d463be3..7e95827 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ python-dateutil==2.8.0
 python-jose==3.0.1
 pytorch-pretrained-bert==0.6.1
 pytz==2018.9
-PyYAML==5.1
+PyYAML==5.4
 regex==2019.4.14
 requests==2.21.0
 responses==0.10.6