diff --git a/pyproject.toml b/pyproject.toml
index f0260b8..881ce52 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ docs = [
   "sphinx_rtd_theme",
   "sphinxcontrib-video",
   "sphinx-autodoc-typehints",
-  "sphinx-book-theme==1.1.3",
+  "sphinx-book-theme==1.1.4",
   "sphinx-click",
   "sphinx-copybutton",
   "sphinx-markdown-tables==0.0.17",