diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ requirements = [
     'dill>0.2',
     'sphinx',
     'cython',
-    'ipython==4.0.0',
+    'ipython>=4.0.0',
     'ipyparallel',
     'ipykernel>=4.1',
     'jupyter',
ipython <I> seems ok