diff --git a/environment.yml b/environment.yml
index a195228f4..647138680 100644
--- a/environment.yml
+++ b/environment.yml
@@ -30,7 +30,7 @@ dependencies:
   - python = 3.8.*
   - pyyaml >= 5.1
   - scikit-learn >=0.23.1,<0.24
-  - scipy >= 1.5
+  - scipy = 1.5.*  # todo: upgrade to 1.6 once we support scikit-learn 0.24
   - seaborn = 0.11.*
   - sklearndf >=1.0,<2
   - sphinx = 3.4.*
@@ -42,4 +42,4 @@ dependencies:
   - xlrd >= 1.2
   - yaml > 0.2
   - pip:
-      - shap >=0.35,<0.39
\ No newline at end of file
+      - shap >=0.35,<0.39