diff --git a/requirements.txt b/requirements.txt
index ed12c9a..a66f621 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy >= 1.9.0
 scipy
 singledispatch >= 3.4.0.3
-scikit-learn >= 1.3
+scikit-learn >= 0.20
 attrs > 16.0.0
 jinja2 >= 3.0.0
 pip >= 8.1