diff --git a/requirements.txt b/requirements.txt
index 057ae15..1825a5a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ MarkupSafe==1.0
 pycparser==2.18
 pyOpenSSL==17.5.0
 python-dateutil==2.6.1
-PyYAML==5.1
+PyYAML==5.4
 requests==2.20.0
 six==1.10.0
 Unidecode==0.4.21