diff --git a/setup.py b/setup.py
index f7e60f60..45947822 100755
--- a/setup.py
+++ b/setup.py
@@ -73,7 +73,7 @@ def get_package_data():
     return package_data
 
 ns = {}
-with open(pjoin(here, 'jupyterhub', 'version.py')) as f:
+with open(pjoin(here, 'jupyterhub', '_version.py')) as f:
     exec(f.read(), {}, ns)