diff --git a/requirements.txt b/requirements.txt
index 3ae22d3..2a520f8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,6 @@ numpy
 matplotlib
 pyyaml
 pandas>=0.23
-scipy>=1.2
+scipy==1.2.1 # scipy 1.3.0rc1 is not compatible with salib
 SALib>=1.3
 Jinja2