diff --git a/environment.yml b/environment.yml
index dd4171f..51ed0c4 100644
--- a/environment.yml
+++ b/environment.yml
@@ -10,7 +10,8 @@ dependencies:
   - pip
 
   - pandas
-  - numpy=1.19
+  - numpy<1.20
+  - numpoly<1.2.0
   - scipy
   - statsmodels
   - seaborn