diff --git a/requirements/doc.txt b/requirements/doc.txt
index a1a71ff..df0ee2d 100644
--- a/requirements/doc.txt
+++ b/requirements/doc.txt
@@ -419,7 +419,7 @@ sphinx==6.2.1
     #   sphinxcontrib-serializinghtml
 sphinx-book-theme==1.0.1
     # via -r requirements/doc.in
-sphinxcontrib-applehelp==1.0.6
+sphinxcontrib-applehelp==1.0.4
     # via sphinx
 sphinxcontrib-devhelp==1.0.5
     # via sphinx