diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 42ca7c81..b7f69682
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ Pillow==3.3.0
 psycopg2==2.6.2
 python-http-client==1.2.3
 python-openid==2.2.5
-PyYAML==3.12
+PyYAML==5.4
 requests==2.11.1
 requests-oauthlib==0.6.2
 selenium==3.0.2