diff --git a/requirements.txt b/requirements.txt
index 85b1d9cf1..f869caf34 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ kombu!=4.0.2,>=4.0.0 # BSD
 psutil>=3.2.2 # BSD
 six>=1.10.0 # MIT
 netaddr>=0.7.18 # BSD
-PyYAML>=3.10 # MIT
+PyYAML>=3.12 # MIT
 jsonpatch!=1.20,>=1.16 # BSD
 keystoneauth1>=3.4.0 # Apache-2.0
 keystonemiddleware>=4.17.0 # Apache-2.0