matplotlib
diff --git a/‎.github/workflows/tests.yml
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+1-1Lines changed: 1 addition & 1 deletion b/‎.github/workflows/tests.yml
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diff --git a/‎requirements/doc/doc-requirements.txt
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@@ -177,7 +177,7 @@ jobs:
 
           # Install optional dependencies from PyPI.
           # Sphinx is needed to run sphinxext tests
-          python -m pip install --upgrade sphinx
+          python -m pip install --upgrade sphinx!=6.1.2
 
           # GUI toolkits are pip-installable only for some versions of Python
           # so don't fail if we can't install them.  Make it easier to check
 
@@ -7,7 +7,7 @@
 # Install the documentation requirements with:
 #     pip install -r requirements/doc/doc-requirements.txt
 #
-sphinx>=3.0.0
+sphinx>=3.0.0,!=6.1.2
 colorspacious
 ipython
 ipywidgets