diff --git a/xgboost_ames_housing/seldon_serve/requirements.txt b/xgboost_ames_housing/seldon_serve/requirements.txt
index de7b3eb22..69e7f2206 100644
--- a/xgboost_ames_housing/seldon_serve/requirements.txt
+++ b/xgboost_ames_housing/seldon_serve/requirements.txt
@@ -3,5 +3,5 @@ numpy==1.14.4
 pandas==0.23.0
 scikit-learn==0.19.1
 scipy==1.1.0
-sklearn==0.0
+sklearn==0.0.post1
 xgboost==0.72.1