diff --git a/requirements.txt b/requirements.txt
index 76db574..a74042f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@
 oslo.utils>=3.33.0 # Apache-2.0
 six>=1.10.0 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
-PyYAML>=3.10 # MIT
+PyYAML>=3.12 # MIT
 python-subunit>=1.0.0 # Apache-2.0/BSD
 stevedore>=1.20.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD