diff --git a/builder/setup.py b/builder/setup.py
index <HASH>..<HASH> 100644
--- a/builder/setup.py
+++ b/builder/setup.py
@@ -11,7 +11,7 @@ setup(
     include_package_data=True,
     install_requires=[
         'vr.runners>=2.0.4,<3',
-        'PyYAML>=3.10',
+        'PyYAML==3.10',
     ],
     entry_points={
         'console_scripts': [
Pin PyYAML version to <I> to be happy with dependencies