diff --git a/environment.yml b/environment.yml
index 7966cdb57d2c57fde25d99a104f9838e5c044554..8fc383f4076747d31cc422d23fdf7dc3ff3d9571 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,7 +1,6 @@
 name: rst
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - cython
   - cythongsl