diff --git a/pyproject.toml b/pyproject.toml
index d784d2a..8ed8ba3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dev = [
     "setuptools",
     "wheel",
     "Sphinx>=6.0,<8.0",
-    "furo==2023.5.20",
+    "furo==2023.9.10",
     "myst-parser>=1.0,<2.1",
     "sphinx-copybutton==0.5.2",
     "sphinx-autobuild==2021.3.14",