diff --git a/setup.py b/setup.py
index afeae2df..8796bb92 100644
--- a/setup.py
+++ b/setup.py
@@ -9,4 +9,4 @@ setup(name='httpie',version=httpie.__version__,
     license=httpie.__licence__,
     packages=['httpie'],
     entry_points={'console_scripts': ['http = httpie.httpie:main']},
-    install_requires=['requests>=0.10.4', 'Pygments>=1.4'])
+    install_requires=['requests>=0.10.4', 'Pygments>=1.4', 'argparse>=1.2.1'])