diff --git a/tests/environment.yml b/tests/environment.yml
index 5edbc77..a324d49 100644
--- a/tests/environment.yml
+++ b/tests/environment.yml
@@ -15,6 +15,6 @@ dependencies:
   - pytest-cov
   - pooch
   - matplotlib
+  - polars>0.16
   - pip:
     - dbdreader
-    - polars