diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 5462076..2f67ff1
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pycodestyle==2.3.1
 pyflakes==1.6.0
 python-dateutil==2.7.3
 pytz==2018.5
-PyYAML==3.13
+PyYAML==5.4
 six==1.11.0
 tablib==0.12.1
 unicodecsv==0.14.1