diff --git a/setup.py b/setup.py
index f759945fd..6582054b9 100644
--- a/setup.py
+++ b/setup.py
@@ -55,6 +55,7 @@ REQUIRED = [
     "tornado",
     "joblib>=0.17.0",
     "ruamel.yaml>=0.16.12",
+    "scikit-learn>=0.22"
 ]
 
 # Numpy include