diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index f11cd3b..00b3603 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -32,8 +32,6 @@ jobs:
         shell: bash -l {0}
     env:
       DESC: "Documentation build"
-      # conda-forge is required to install pydata-sphinx-theme and sphinx-copybutton.
-      CHANS_DEV: "-c nodefaults -c pyviz/label/dev -c bokeh -c conda-forge"
       MPLBACKEND: "Agg"
       DISPLAY: ":99.0"
       PYTHON_DOCS_VERSION: "3.9"
@@ -50,14 +48,17 @@ jobs:
         id: vars
         run: echo ::set-output name=tag::${GITHUB_REF#refs/*/}
       - name: conda setup
+        # conda-forge is required to install pydata-sphinx-theme and sphinx-copybutton.
         run: |
           conda create -n test-environment
           conda activate test-environment
-          conda install ${{ env.CHANS_DEV}} python=${{ env.PYTHON_DOCS_VERSION}} pyctdev
+          conda config --env --append channels pyviz/label/dev --append channels conda-forge
+          conda config --env --remove channels defaults
+          conda install python=${{ env.PYTHON_DOCS_VERSION}} pyctdev
       - name: doit develop_install
         run: |
           conda activate test-environment
-          doit develop_install ${{ env.CHANS_DEV}} -o doc -o examples
+          doit develop_install -o doc -o examples
       - name: doit env_capture
         run: |
           conda activate test-environment