diff --git a/.github/workflows/doctest.yml b/.github/workflows/doctest.yml
index 9006c3687..590d4a97f 100644
--- a/.github/workflows/doctest.yml
+++ b/.github/workflows/doctest.yml
@@ -19,7 +19,7 @@ jobs:
         activate-environment: doctest-env
         environment-file: .github/conda-env/doctest-env.yml
         miniforge-version: latest
-        channels: conda-forge
+        channels: conda-forge,defaults
         channel-priority: strict
         auto-update-conda: false
         auto-activate-base: false
diff --git a/.github/workflows/python-package-conda.yml b/.github/workflows/python-package-conda.yml
index 00e03e0e0..0aabf33bf 100644
--- a/.github/workflows/python-package-conda.yml
+++ b/.github/workflows/python-package-conda.yml
@@ -38,7 +38,7 @@ jobs:
         activate-environment: test-env
         environment-file: .github/conda-env/test-env.yml
         miniforge-version: latest
-        channels: conda-forge
+        channels: conda-forge,defaults
         channel-priority: strict
         auto-update-conda: false
         auto-activate-base: false