diff --git a/docs/source/conf.py b/docs/source/conf.py
index 0e16511..c561738 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -18,6 +18,7 @@
     "sphinx.ext.viewcode",
     "sphinx.ext.autosummary",
     "sphinx_gallery.gen_gallery",
+    "sphinx_search.extension",
 ]
 
 sphinx_gallery_conf = {
diff --git a/pyproject.toml b/pyproject.toml
index ab89f23..b976ce9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,8 @@ dev = ["black==23.9.1",
   "folium==0.17.0",
   "pytest==8.3.3",
   "build",
-  "twine"
+  "twine",
+  "readthedocs-sphinx-search>=0.3.2"
   ]
 
 [project.urls]