diff --git a/server/requirements.txt b/server/requirements.txt
index 305b86a..2cc5d7e 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -8,7 +8,7 @@ idna==2.6
 python-dateutil==2.6.1
 python-mimeparse==1.6.0
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 six==1.11.0
 urllib3==1.22