diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index aac8843ce..654c821d6 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -14,6 +14,7 @@ jobs:
       - uses: actions/checkout@v1
       - run: pip install sphinx
       - run: pip install myst-parser
+      - run: pip install sphinx-rtd-theme
       - run: sudo apt install gettext
       - run: pip install sphinx-intl
       - name: sphinx build(ja)
diff --git a/docs/conf.py b/docs/conf.py
index 8c34dc5f7..8614c5922 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -47,7 +47,7 @@ exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'nature'
+html_theme = 'sphinx_rtd_theme'
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
@@ -57,6 +57,12 @@ html_static_path = ['_static']
 locale_dirs = ['locale/']
 gettext_compact = False
 
-html_context = {"language": language}
-
 github_url = "https://github.com/vrm-c/UniVRM"
+
+html_context = {
+    "language": language,
+    'display_github': True,
+    'github_user': 'vrm-c',
+    'github_repo': 'UniVRM',
+    'github_version': 'master/docs/'
+}