diff --git a/environment.yml b/environment.yml
index 97e492d4..bba5b736 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,7 +1,6 @@
 name: relion-5.0
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - pip
   - python=3.10