1 files changed, 2 insertions, 2 deletions

diff --git a/setup.py b/setup.py
index bca2edf..9c408fd 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@ class Tox(TestCommand):
 
 def main():
     version = sys.version_info[:2]
-    install_requires = ['virtualenv==1.8.4', 'py>=1.4.9', ]
+    install_requires = ['virtualenv>=1.8.4', 'py>=1.4.9', ]
     if version < (2, 7) or (3, 0) <= version <= (3, 1):
         install_requires += ['argparse']
     setup(
@@ -77,4 +77,4 @@ def main():
     )
 
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()