diff --git a/requirements.txt b/requirements.txt
index 91acac0..cdc8ed8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ pygments-style-solarized==0.1.1
 pylibmc==1.5.2
 python-dateutil==2.6.1
 pytz==2017.3
-PyYAML==3.12
+PyYAML==5.1
 requests==2.18.4
 simplegeneric==0.8.1
 six==1.11.0