diff --git a/ci/dev.yml b/ci/dev.yml
index 99ee7e3b..03f0db66 100644
--- a/ci/dev.yml
+++ b/ci/dev.yml
@@ -2,7 +2,7 @@ name: xskillscore-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.8
+  - python >=3.9
   # Documentation
   - nbsphinx
   - nbstripout