diff --git a/requirements.txt b/requirements.txt
index f6dd7d3..0aca994 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ MarkupSafe==1.1.1
 pycparser==2.19
 pyOpenSSL==17.0.0
 python-dateutil==2.8.0
-PyYAML==3.12
+PyYAML==5.4
 requests==2.22.0
 six==1.11.0
 urllib3==1.25.6