diff --git a/docs/conf.py b/docs/conf.py
index ea8719b..1d6d83e 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -17,6 +17,7 @@
     "sphinx.ext.autodoc",
     "sphinx.ext.intersphinx",
     "sphinx.ext.napoleon",
+    "sphinx_rtd_theme",
 ]
 
 intersphinx_mapping = {