diff --git a/requirements.txt b/requirements.txt
index 7bd1a6a..fe3e47c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ packaging==16.8
 pathtools==0.1.2
 pyparsing==2.1.10
 python-dateutil==2.6.0
-PyYAML==3.12
+PyYAML==5.4
 requests==2.13.0
 six==1.10.0
 tornado==4.4.2