diff --git a/setup.py b/setup.py
index 9bc5358..a3e61ca 100644
--- a/setup.py
+++ b/setup.py
@@ -19,6 +19,7 @@ setup(name='bootstrap-vz',
       install_requires=['termcolor >= 1.1.0',
                         'fysom >= 1.0.15',
                         'jsonschema >= 2.3.0',
+			'pyyaml >= 3.10',
                         ],
       license='Apache License, Version 2.0',
       description='Bootstrap Debian images for virtualized environments',