diff --git a/setup.py b/setup.py
index c2565530..6775432f 100644
--- a/setup.py
+++ b/setup.py
@@ -161,6 +161,7 @@ def run(self):
         "scipy>=0.19.1",
         "scikit-learn>=0.20.0",
         "pandas",
+        "ConfigSpace"
     ],
     extras_require={"plots": ["matplotlib>=2.0.0"]},
     cmdclass={