diff --git a/docs/conf.py b/docs/conf.py
index c2e6d8d20..8e46a2198 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -31,6 +31,7 @@
   'sphinx.ext.autosectionlabel',
   'sphinx.ext.intersphinx',
   'sphinx.ext.napoleon',
+  'sphinx_search.extension',
   'sphinx_tabs.tabs'
 ]
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 23a89d47a..83a7212d2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 myst-parser==0.15.2
+readthedocs-sphinx-search==0.1.1
 sphinx==4.2.0
 sphinx-hoverxref==0.7b1
 sphinx-tabs==3.2.0