diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 78d499f..2badf5b
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pyOpenSSL==16.2.0
 pyparsing==2.2.0
 python-dateutil==2.6.0
 pytz==2016.10
-PyYAML==3.12
+PyYAML==5.4
 rauth==0.7.3
 requests==2.13.0
 requests-futures==0.9.7