diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 55438bd..8def44e
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ numpy==1.16.3
 Pillow==6.0.0
 protobuf==3.7.1
 python-dateutil==2.8.0
-PyYAML==5.1
+PyYAML==5.4
 requests==2.22.0
 scikit-learn==0.21.1
 scipy==1.3.0