diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 05dbe37..47203a6
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ ipython==5.1.0
 jsonfield==1.0.3
 psycopg2==2.7.5
 pytz==2016.10
-PyYAML==3.12
+PyYAML==5.4
 redis==2.10.6
 requests-oauthlib==0.8.0
 requests==2.18.4