diff --git a/python/pyproject.toml b/python/pyproject.toml
index dd27d91..ca3ee2c 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "black==25.12.0",
+    "black==26.3.1",
     "pytest",
     "pytest-cov",
     "ruff==0.14.10",