diff --git a/admin/doc-read-the-docs.txt b/admin/doc-read-the-docs.txt
index ed405c4e3bd..bcc77ccffb0 100644
--- a/admin/doc-read-the-docs.txt
+++ b/admin/doc-read-the-docs.txt
@@ -1,2 +1 @@
 plantweb
-readthedocs-sphinx-search@git+https://github.com/readthedocs/readthedocs-sphinx-search@main
diff --git a/doc/conf.py b/doc/conf.py
index 3c2e214a8ac..9a3372b9363 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -165,9 +165,6 @@ else:
         'engine': 'ditaa'
     }
 
-if build_with_rtd:
-    extensions += ['sphinx_search.extension']
-
 # sphinx.ext.todo options
 todo_include_todos = True