diff -up ./setup.py.argparse ./setup.py
--- ./setup.py.argparse	2014-04-16 19:38:44.171830146 -0400
+++ ./setup.py	2014-04-16 19:38:53.345243203 -0400
@@ -10,7 +10,7 @@ setup(name='rospkg',
       packages=['rospkg'],
       package_dir = {'':'src'},
       scripts = ['scripts/rosversion'],
-      install_requires=['argparse', 'PyYAML'],
+      install_requires=['PyYAML'],
       author = "Ken Conley", 
       author_email = "kwc@willowgarage.com",
       url = "http://wiki.ros.org/rospkg",