diff --git a/cmd/suggestion/skopt/v1alpha3/requirements.txt b/cmd/suggestion/skopt/v1alpha3/requirements.txt
index 5bd0a6b9a35..5707ec3aa3b 100644
--- a/cmd/suggestion/skopt/v1alpha3/requirements.txt
+++ b/cmd/suggestion/skopt/v1alpha3/requirements.txt
@@ -7,4 +7,4 @@ scipy>=0.19.1
 forestci
 protobuf
 googleapis-common-protos
-hyperopt==0.1.2
+scikit-optimize==0.5.2