diff --git a/docs/conf.py b/docs/conf.py
index 87d20bd..4bf1dd3 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -107,7 +107,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = "sphinx_books_theme"
+html_theme = "sphinx_rtd_theme"
 html_static_path = ["_static"]
 html_title = project_name
 
diff --git a/pyproject.toml b/pyproject.toml
index d7fcbc4..bc82cb1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,6 +52,7 @@ doc = [
     "ipykernel",
     "ipython",
     "sphinx-copybutton",
+    "sphinx-rtd-theme"
 
 ]
 test = [