diff --git a/requirements.txt b/requirements.txt
index 788f117..09dc315 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ python-editor==1.0.3
 python-mimeparse==1.6.0
 python-openid==2.2.5
 pytz==2016.4
-PyYAML==3.11
+PyYAML==5.4
 requests==2.17.1
 shellescape==3.4.1
 six==1.7.3