diff --git a/src/requirements.txt b/src/requirements.txt
index b7b36fb..79e468d 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -67,7 +67,7 @@ python-datamuse==1.3.0
 python-dateutil==2.8.1
 python-debian==0.1.32
 python-telegram-bot==12.7
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.7.0
 requests-unixsocket==0.1.5
 scipy==1.4.1