diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@ setup(name="strictyaml",
       author_email='colm.oconnor.github@gmail.com',
       url='http://hitchdev.com/strictyaml',
       license='MIT',
-      install_requires=["ruamel.yaml>=0.14.2", "python-dateutil>=2.6.0", ],
+      install_requires=["ruamel.yaml==0.17.5", "python-dateutil>=2.6.0", ],
       packages=find_packages(exclude=["tests", "docs", ]),
       package_data={},
       zip_safe=False,
BUGFIX : Ensure strictyaml continues to work.