diff --git a/requirements.txt b/requirements.txt
index 23d6cec..67d017b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ pysha3==1.0.2
 pytest==3.9.1
 pytest-cov==2.6.0
 pytest-pythonpath==0.7.3
-PyYAML==3.13
+PyYAML==5.4
 redis==2.10.6
 requests==2.20.0
 six==1.11.0