diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 79e6d56..c61d4f9
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ numpy==1.18.1
 psycopg2==2.8.4
 pylint==2.4.4
 python-dateutil==2.8.1
-PyYAML==5.3
+PyYAML==5.4
 requests==2.22.0
 s3transfer==0.3.1
 scikit-learn==0.22.1