diff --git a/requirements.txt b/requirements.txt
index 22ab13e..e63fd38 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ pytest==3.8.2
 python-coveralls==2.9.1
 python-dotenv==0.9.1
 pytz==2018.5
-PyYAML==3.13
+PyYAML==5.4
 requests==2.19.1
 six==1.11.0
 typed-ast==1.1.0