diff --git a/documentation/about.rst b/documentation/about.rst
index a245f0913..960559de5 100644
--- a/documentation/about.rst
+++ b/documentation/about.rst
@@ -41,9 +41,9 @@ Betty does not help you gather or manage the data for your family history. For t
 
 Find Betty on
 -------------
-- :si-icon:`fontawesome/brands/twitter` `Twitter <https://twitter.com/Betty_Project>`_
-- :si-icon:`fontawesome/brands/github` `Github <https://github.com/bartfeenstra/betty>`_
-- :si-icon:`fontawesome/brands/python` `PyPI <https://pypi.org/project/betty>`_
+- `Twitter <https://twitter.com/Betty_Project>`_
+- `Github <https://github.com/bartfeenstra/betty>`_
+- `PyPI <https://pypi.org/project/betty>`_
 
 In this section
 ---------------
diff --git a/documentation/conf.py b/documentation/conf.py
index 1f6bae085..1417bd225 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -41,7 +41,7 @@
     "conf_py_path": "/documentation/",
     "betty_replacements": betty_replacements,
 }
-html_theme = "sphinx_immaterial"
+html_theme = "furo"
 highlight_language = "none"
 templates_path = ["_templates"]
 extensions = [
@@ -51,7 +51,6 @@
     "sphinx.ext.viewcode",
     "sphinx_autodoc_typehints",
     "sphinx_design",
-    "sphinx_immaterial",
 ]
 nitpicky = True
 modindex_common_prefix = ["betty."]
diff --git a/pyproject.toml b/pyproject.toml
index dc4c4a946..29997b316 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ dependencies = [
     'babel ~= 2.12, >= 2.12.0',
     'click ~= 8.1, >= 8.1.2',
     'docker ~= 7.0, >= 7.0.0',
+    'furo == 2024.4.27',
     'geopy ~= 2.3, >= 2.3.0',
     'jinja2 ~= 3.1, >= 3.1.1',
     'jsonschema ~= 4.17, >= 4.17.0',
@@ -35,7 +36,6 @@ dependencies = [
     'referencing ~= 0.34, >= 0.34.0',
     'sphinx ~= 7.2, >= 7.2.6',
     'sphinx-design ~= 0.5, >= 0.5.0',
-    'sphinx-immaterial ~= 0.11, >= 0.11.10',
     'sphinx-autodoc-typehints ~= 2.0, >= 2.0.0',
     'typing_extensions ~= 4.10, >= 4.10.0',
 ]