diff --git a/setup.py b/setup.py
index ff4042a57..c4aea8835 100644
--- a/setup.py
+++ b/setup.py
@@ -80,7 +80,7 @@
 
 setuptools_args = {}
 install_requires = setuptools_args['install_requires'] = [
-    'ipython',
+    'ipython>=4.0.0.dev0',
     'traitlets',
     'jupyter_client',
 ]