diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 5beb92115..fd64ace52
--- a/requirements.txt
+++ b/requirements.txt
@@ -138,7 +138,7 @@ python-debian==0.1.32
 python3-memcached==1.51
 pytz==2018.3
 pyxdg==0.25
-PyYAML==3.12
+PyYAML==5.1
 pyzmq==20.0.0
 qrcode==6.1
 rasterio==1.1.7