diff --git a/python/pyproject.toml b/python/pyproject.toml
index 161a921..23e54d2 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "pytest==8.3.4",
-    "black==24.10.0",
+    "black==26.3.1",
     "flake8==7.1.1",
     "isort==5.13.2",
     "mypy==1.14.1",
diff --git a/python/requirements-dev.txt b/python/requirements-dev.txt
index 28c26bb..193233f 100644
--- a/python/requirements-dev.txt
+++ b/python/requirements-dev.txt
@@ -6,7 +6,7 @@
 #
 annotated-types==0.7.0
     # via pydantic
-black==24.10.0
+black==26.3.1
     # via marketplace-reference-code (pyproject.toml)
 certifi==2024.12.14
     # via requests