diff --git a/setup.py b/setup.py
index c7101a3..f3131cc 100644
--- a/setup.py
+++ b/setup.py
@@ -18,8 +18,8 @@ setup(
     packages=["flake8", "flake8.tests"],
     install_requires=[
         "setuptools",
-        "pyflakes==0.6.1",
-        "pep8==1.4.2",
+        "pyflakes >= 0.6.1",
+        "pep8 >= 1.4.2",
     ],
     entry_points={
         'distutils.commands': ['flake8 = flake8.main:Flake8Command'],