use the readthedocs theme

docs/conf.py

@@ -25,6 +25,7 @@ extensions = [
     "myst_parser",
     "sphinx_copybutton",
     "sphinxcontrib.mermaid",
+    "sphinx_rtd_theme",
 ]
 
 
@@ -85,10 +86,4 @@ exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
 ### theme ###
 
-# html_theme = "alabaster"
-html_theme = "furo"
-html_theme_options = {
-    "source_repository": "https://github.com/octodns/octodns/",
-    "source_branch": "main",
-    "source_directory": "docs/",
-}
+html_theme = "sphinx_rtd_theme"

requirements-docs.txt

@@ -4,26 +4,22 @@ MarkupSafe==3.0.2
 Sphinx==7.4.7; python_version=='3.9'
 Sphinx==8.1.3; python_version=='3.10'
 Sphinx==8.2.3; python_version>='3.11'
-accessible-pygments==0.0.5
 alabaster==0.7.16; python_version<'3.10'
 alabaster==1.0.0; python_version>='3.10'
 babel==2.17.0
-beautifulsoup4==4.13.4
-furo==2025.7.19
 imagesize==1.4.1
 mdit-py-plugins==0.5.0
 myst-parser==3.0.1; python_version<'3.10'
 myst-parser==4.0.1; python_version>='3.10'
 roman-numerals-py==3.1.0
 snowballstemmer==3.0.1
-soupsieve==2.7
-sphinx-basic-ng==1.0.0b2
 sphinx-copybutton==0.5.2
+sphinx-rtd-theme==3.0.2
 sphinxcontrib-applehelp==2.0.0
 sphinxcontrib-devhelp==2.0.0
 sphinxcontrib-htmlhelp==2.1.0
+sphinxcontrib-jquery==4.1
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-mermaid==1.0.0
 sphinxcontrib-qthelp==2.0.0
 sphinxcontrib-serializinghtml==2.0.0
-typing_extensions==4.14.1

setup.py

@@ -72,11 +72,11 @@ setup(
             'twine>=3.4.2',
         ),
         'docs': (
-            'Sphinx>=8.2.3',
-            'furo>=2024.8.6',
             'myst-parser>=4.0.1',
-            'sphinx-copybutton>=0.5.2',
+            'Sphinx>=8.2.3',
             'sphinxcontrib-mermaid>=1.0.0',
+            'sphinx-copybutton>=0.5.2',
+            'sphinx_rtd_theme',
         ),
     },
     install_requires=(