diff --git a/pyproject.toml b/pyproject.toml
index 395edd97..1599e28d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dev = [
     "pytest>=7.2.0",
     "pytest-cov>=4.0.0",
     "Sphinx>=5.3.0",
-    "furo>=2022.6.4,<2023.8.20",
+    "furo>=2022.6.4,<2023.9.11",
     "sphinx-copybutton>=0.5.0",
     "sphinxext-opengraph>=0.7.0",
     "myst-parser>=0.18.0",