fix:

Author: lwasser

pyproject.toml

@@ -80,10 +80,11 @@ dependencies = [
     "mkdocs-awesome-pages-plugin ~=2.9",
     "pydata_sphinx_theme ~=0.16",
     "myst-parser ~=4.0",
-    "sphinx~=8.0",
+    "Sphinx ~=8.0",
     "sphinx-autobuild>=2024.10.3",
     "sphinx-autoapi>=3.6.0",
     "sphinx-design>=0.6.1",
+    "sphinx-copybutton",
 ]
 
 [[tool.hatch.envs.test.matrix]]