diff --git a/Requirements.txt b/Requirements.txt
index 60033b4..8840552 100644
--- a/Requirements.txt
+++ b/Requirements.txt
@@ -118,7 +118,7 @@ python-telegram-bot==12.1.1
 pytorch-pretrained-bert==0.6.2
 pytorch-transformers==1.1.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 regex==2019.11.1
 requests==2.22.0