diff --git a/environment_np2.yml b/environment_np2.yml
index b92abfcf..d4692757 100644
--- a/environment_np2.yml
+++ b/environment_np2.yml
@@ -3,6 +3,7 @@ channels:
   - conda-forge
   - defaults
 dependencies:
+  - python>=3.13
   - coverage
   - numpy>=2
   - scipy