diff --git a/requirements.txt b/requirements.txt
index 423db06..7170640 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ Pygments==2.6.1
 pyparsing==2.4.7
 pytest==5.4.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 readme-renderer==25.0
 recommonmark==0.6.0
 requests==2.23.0