don't use conda-forge directly
@@ -38,7 +38,7 @@ env:
- PIP_DEPENDENCIES='nbsphinx sphinx-astropy sphinx-gallery sphinx-click sphinx_rtd_theme pytest-astropy parfive pydantic'
- - CONDA_CHANNELS='conda-forge sherpa'
+ - CONDA_CHANNELS='astropy sherpa'
- FETCH_GAMMAPY_DATA=true
- TEST_COVERAGE=false
- TEST_PACKAGING=false
