diff --git a/extra_requirements/requirements-docs.txt b/extra_requirements/requirements-docs.txt
index df0392fd..160103a1 100644
--- a/extra_requirements/requirements-docs.txt
+++ b/extra_requirements/requirements-docs.txt
@@ -11,7 +11,7 @@ sphinx==5.2.3
 sphinx_rtd_theme==1.0.0
 sphinxcontrib_applehelp==1.0.2
 sphinxcontrib_devhelp==1.0.2
-sphinxcontrib_htmlhelp==2.0.0
+sphinxcontrib_htmlhelp==2.0.4
 sphinxcontrib_jsmath==1.0.1
 sphinxcontrib_qthelp==1.0.3
 typing-extensions==4.3.0