diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 394e743..938c2ae
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ pyserial==3.0.1
 python-apt==1.1.0b1
 python-debian==0.1.27
 python-systemd==231
-PyYAML==3.11
+PyYAML==5.4
 requests==2.9.1
 six==1.11.0
 ssh-import-id==5.5