diff --git a/pyproject.toml b/pyproject.toml
index 49e2bf4..2633644 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ Source = "https://github.com/marshmallow-code/marshmallow-sqlalchemy"
 
 [project.optional-dependencies]
 docs = [
-  "furo==2025.9.25",
+  "furo==2025.12.19",
   "sphinx-copybutton==0.5.2",
   "sphinx-design==0.6.1",
   "sphinx-issues==5.0.1",