diff --git a/docs/conf.py b/docs/conf.py
index f127b676..b1e5efd2 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -131,7 +131,7 @@ def prep_jinja_env(jinja_env: JinjaEnvironment) -> None:
 # -- Options for HTML output -------------------------------------------------
 # 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 = "furo"
 html_static_path = ["_static"]
 html_css_files = ["theme_overrides.css"]
 html_theme_options = {
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 947730e6..065be1b7 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,4 @@
+furo
 graphviz
 jinja2
 myst-parser
diff --git a/pyproject.toml b/pyproject.toml
index 8fbeec2f..252f742c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -105,6 +105,7 @@ black = ">=22.6.0"
 coverage = {extras = ["toml"], version = ">=7.2.2"}
 docformatter = {extras = ["tomli"], version = ">=1.6.5,<1.7.1"}  # upper bound is due to https://github.com/PyCQA/docformatter/issues/174
 flask = ">=2.2.2"
+furo = ">=2023.9.10"
 graphviz = ">=0.20.1"
 http-server-mock = ">=1.7"
 isort = ">=5.12.0"