diff --git a/python/requirements/tune/requirements_tune.txt b/python/requirements/tune/requirements_tune.txt
index 335cfe4e3aa3..6bee7b5c7b22 100644
--- a/python/requirements/tune/requirements_tune.txt
+++ b/python/requirements/tune/requirements_tune.txt
@@ -2,7 +2,7 @@ autogluon.core==0.1.0
 ax-platform==0.1.9; python_version < '3.7'
 ax-platform==0.1.20; python_version >= '3.7'
 bayesian-optimization==1.2.0
-ConfigSpace==0.4.18
+ConfigSpace==0.4.20
 dask[complete]==2021.03.0; python_version < '3.7'
 dask[complete]==2021.06.1; python_version >= '3.7'
 dragonfly-opt==0.1.6