diff --git a/pyproject.toml b/pyproject.toml
index f1f9b4e9..235c6945 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-  "black[jupyter] ==25.11.0",
+  "black[jupyter] ==25.12.0",
   "blackdoc ==0.4.6",
   "codespell ==2.4.1",
   "coverage >=7.5.0",