diff --git a/docs/requirements.txt b/docs/requirements.txt
index 72966ece2..7fb12c1b0 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -19,7 +19,7 @@ Sphinx==7.3.7
 sphinx-book-theme==1.1.2
 sphinxcontrib-applehelp==1.0.8
 sphinxcontrib-devhelp==1.0.6
-sphinxcontrib-htmlhelp==2.0.5
+sphinxcontrib-htmlhelp==2.1.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.7
 sphinxcontrib-serializinghtml==1.1.10