diff --git a/poseidon/airflow/test/requirements.txt b/poseidon/airflow/test/requirements.txt
index bd54c8c..b24c940 100644
--- a/poseidon/airflow/test/requirements.txt
+++ b/poseidon/airflow/test/requirements.txt
@@ -259,7 +259,7 @@ python3-openid==3.2.0
 pytz==2020.1
 pytzdata==2020.1
 pywinrm==0.4.1
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==19.0.2
 qds-sdk==1.16.0
 redis==3.5.3