testing

Author: elliotchance

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Verify docs
         run: |
           export PIP_BREAK_SYSTEM_PACKAGES=1
-          pip install -U sphinx sphinx_rtd_theme sphinxcontrib-htmlhelp sphinxcontrib-serializinghtml
+          pip3 install sphinx sphinx_rtd_theme sphinxcontrib-htmlhelp sphinxcontrib-serializinghtml
           cd docs && python3 -m pip install -r requirements.txt && cd -
           make clean-docs docs
           git diff --exit-code