diff --git a/requirements.txt b/requirements.txt
index 5ed10e5..8858584 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ pycparser==2.19
 Pygments==2.3.1
 PyNaCl==1.3.0
 pytz==2018.9
-PyYAML==5.1
+PyYAML==5.4
 query-string==2019.3.22
 redis==3.2.1
 request==2019.3.22