diff --git a/.github/workflows/continuous_integration.yml b/.github/workflows/continuous_integration.yml
index b74dbe301f3e9ef2477c28bea45182d2f58e5235..e8e630bb957ef2fcc7820dd97c60c6c1c6c04842 100644
--- a/.github/workflows/continuous_integration.yml
+++ b/.github/workflows/continuous_integration.yml
@@ -28,7 +28,7 @@ jobs:
           miniconda-version: "latest"
           mamba-version: "*"
           use-mamba: true
-          channels: conda-forge, defaults
+          channels: conda-forge
           channel-priority: strict
           activate-environment: plio
           environment-file: environment.yml