diff --git a/requirements.txt b/requirements.txt
index aadf0591..d1a41d73 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,4 +9,5 @@ isort~=5.7
 sphinx==4.0.2
 sphinx-book-theme==0.3.3
 sphinx-togglebutton==0.3.1
-sphinxcontrib-applehelp<=1.0.7
\ No newline at end of file
+sphinxcontrib-applehelp<=1.0.7
+sphinxcontrib.devhelp<=1.0.5
\ No newline at end of file