diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 675cff4..7d99518 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,7 @@ jobs:
         event-name: [push]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
diff --git a/setup.py b/setup.py
index 5b68a25..5a27124 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def get_version(file, name="__version__"):
 ]
 
 requires_dev = requires + [
-    "black>=20.",
+    "black>=23",
     "bump2version>=1.0.0",
     "flake8>=3.7.8",
     "flake8-black>=0.2.1",