diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index f3fe409..e6fd2ba 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -3,5 +3,8 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.12"
+python:
+  install:
+    - requirements: docs/requirements.txt
 sphinx:
   configuration: docs/conf.py
diff --git a/docs/conf.py b/docs/conf.py
index 3e2b038..ef47894 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -25,7 +25,7 @@ import sys, os
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = []
+extensions = ['sphinx_rtd_theme']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..43eeb8e
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1 @@
+sphinx-rtd-theme==1.3.0