diff --git a/ansible/requirements.txt b/ansible/requirements.txt
index d3e6df2..859af00 100644
--- a/ansible/requirements.txt
+++ b/ansible/requirements.txt
@@ -5,5 +5,5 @@ cryptography==2.7
 Jinja2==2.10.1
 MarkupSafe==1.1.1
 pycparser==2.19
-PyYAML==5.1
+PyYAML==5.4
 six==1.12.0