diff --git a/setup.py b/setup.py
index 2ff9238..6e02bce 100644
--- a/setup.py
+++ b/setup.py
@@ -13,5 +13,6 @@ setup(name='bash_kernel',
       author='Thomas Kluyver',
       author_email='thomas@kluyver.me.uk',
       py_modules=['bash_kernel'],
-      cmdclass={'install': install_with_kernelspec}
+      cmdclass={'install': install_with_kernelspec},
+      install_requires=['ipython>=3.0', 'pexpect>=3.3'],
       )
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