diff --git a/.github/env.yaml b/.github/env.yaml
index c54547d..f65b0c5 100644
--- a/.github/env.yaml
+++ b/.github/env.yaml
@@ -2,7 +2,7 @@ name: test_environment
 channels:
   - conda-forge
   - bioconda
-  - defaults
+  - anaconda
 dependencies:
   - biobb_common ==4.1.0
   - mdanalysis >=2.0.0