diff --git a/docs/conf.py b/docs/conf.py
index 06ff71f..556f17d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -52,7 +52,6 @@
 # ones.
 extensions = [
     "sphinx.ext.todo",
-    "sphinx_rtd_theme",
     "nbsphinx",
     "sphinx.ext.graphviz",
     "sphinx.ext.intersphinx",
@@ -121,8 +120,8 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-#
-html_theme = "sphinx_rtd_theme"
+
+html_theme = "pydata_sphinx_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,
@@ -130,6 +129,13 @@
 html_static_path = ["_static"]
 html_css_files = ["style.css"]
 
+# Here we control which pages have what sidebars
+html_sidebars = {
+    "index": [],
+    "overview": [],
+    "contributing/**": ["search-field.html", "sidebar-nav-bs.html"],
+}
+
 
 todo_include_todos = not read_the_docs_build
 
diff --git a/docs/contributing/contributing.rst b/docs/contributing/contributing.rst
index ae59df4..aa753fb 100644
--- a/docs/contributing/contributing.rst
+++ b/docs/contributing/contributing.rst
@@ -83,3 +83,13 @@ before enabling automated checks.
 Please follow the `GitHub Code of Conduct
 <https://docs.github.com/en/site-policy/github-terms/github-community-code-of-conduct>`_
 for respectful collaboration.
+
+.. toctree::
+   :maxdepth: 2
+   :hidden:
+
+   environment
+   guidelines
+   code_style
+   testing
+   documentation
diff --git a/docs/index.rst b/docs/index.rst
index 69444c9..5c16cab 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -13,23 +13,6 @@ framework it seeks to handle many of the complexities that
 meteorological organisations will share, allowing them to easily train
 models from existing recipes but with their own data.
 
-.. toctree::
-   :maxdepth: 1
-   :caption: The Anemoi Framework
-
-   overview
-
-.. toctree::
-   :maxdepth: 1
-   :caption: Contributing
-
-   contributing/contributing.rst
-   contributing/environment.rst
-   contributing/guidelines.rst
-   contributing/code_style.rst
-   contributing/testing.rst
-   contributing/documentation.rst
-
 **************
  Dependencies
 **************
@@ -37,7 +20,7 @@ models from existing recipes but with their own data.
 .. raw:: html
 
    <center>
-   <object type="image/svg+xml" data="_static/dependencies.svg" width="75%" height="auto">
+   <object type="image/svg+xml" data="_static/dependencies.svg" height="35%">
      <img src="_static/dependencies.png" alt="Fallback image description">
    </object>
    </center>
@@ -64,4 +47,11 @@ optional dependencies.
 
 *Anemoi* is available under the open source `Apache License`__.
 
+.. toctree::
+   :maxdepth: 1
+   :hidden:
+
+   overview
+   contributing/contributing.rst
+
 .. __: http://www.apache.org/licenses/LICENSE-2.0.html
diff --git a/pyproject.toml b/pyproject.toml
index ae46c3f..c710a5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,8 +20,8 @@ dependencies = [
   "nbsphinx",
   "pandoc",
   "pre-commit",
+  "pydata-sphinx-theme",
   "requests",
   "sphinx",
   "sphinx-argparse<0.5",
-  "sphinx-rtd-theme",
 ]