diff --git a/tests/ansible/requirements.txt b/tests/ansible/requirements.txt
index 507151c5..7cab6681 100644
--- a/tests/ansible/requirements.txt
+++ b/tests/ansible/requirements.txt
@@ -4,4 +4,4 @@ paramiko==2.3.2  # Last 2.6-compat version.
 google-api-python-client==1.6.5
 hdrhistogram==0.6.1
 PyYAML==3.11; python_version < '2.7'
-PyYAML==3.12; python_version >= '2.7'
+PyYAML==3.13; python_version >= '2.7'