diff --git a/conda-reqs/ci-shared.yaml b/conda-reqs/ci-shared.yaml
index c5291f25..e0cf2b36 100644
--- a/conda-reqs/ci-shared.yaml
+++ b/conda-reqs/ci-shared.yaml
@@ -3,9 +3,7 @@ channels:
     - ucb-bar
     - nodefaults
 
-# non-standard key used in conda-lock: https://github.com/conda-incubator/conda-lock#platform-specification
-platforms:
-    - linux-64
+# remove non-standard conda-lock 'platforms' key to use this file with conda-incubator/setup-miniconda GH action
 
 dependencies:
     # https://conda-forge.org/feedstock-outputs/