diff --git a/pyproject.toml b/pyproject.toml
index 363ec1f..5743919 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ test = [
 ]
 docs = [
     "sphinx",
-    "sphinx-book-theme>=1.0.1",
+    "sphinx-book-theme>=1.1.4",
     "readthedocs-sphinx-search>=0.3.2",
     "nbsphinx>=0.9.2",
     "sphinx_gallery>=0.21.0",