diff --git a/requirements.txt b/requirements.txt
index 10f88fa1..c1fa4fc4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,6 @@
 wcwidth>=0.1.4
 six>=1.9.0
+# support python2.6 by using backport of 'orderedict'
+ordereddict==1.1; python_version < "2.7"
+# Windows requires jinxed
+jinxed>=0.5.4; platform_system == "Windows"
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 60b06a65..b76c20a7 100755
--- a/setup.py
+++ b/setup.py
@@ -1,23 +1,13 @@
 #!/usr/bin/env python
 """Distutils setup script."""
 import os
-import platform
 import setuptools
 
 
 def _get_install_requires(fname):
-    import sys
     result = [req_line.strip() for req_line in open(fname)
               if req_line.strip() and not req_line.startswith('#')]
 
-    # support python2.6 by using backport of 'orderedict'
-    if sys.version_info < (2, 7):
-        result.append('ordereddict==1.1')
-
-    # Windows requires jinxed
-    if platform.system() == 'Windows':
-        result.append('jinxed>=0.5.4')
-
     return result