diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eacc8c1..f0504e0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     name: build and archive
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4.5.0
         with:
           python-version: '3.10'
@@ -35,7 +35,7 @@ jobs:
     name: runner / black formatter
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: psf/black@stable
         with:
           options: "--check --verbose"
@@ -45,7 +45,7 @@ jobs:
     name: static type check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4.5.0
         with:
           python-version: '3.10'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 771e18f..3da4daa 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set env
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
       - uses: actions/setup-python@v4.5.0