diff --git a/requirements.txt b/requirements.txt
index 92ebff2..e422cf3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ ptyprocess==0.5.1
 Pygments==2.0.1
 python-dateutil==2.2
 pytz==2014.10
-PyYAML==3.10
+PyYAML==5.1
 rcssmin==1.0.6
 redis==2.10.3
 repoze.lru==0.6