diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 21029f0..1bf936e 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     container: python:${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - run: python --version
       - run: pip install -r requirements.txt
       - run: |
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 009d0cd..d15864a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     container: python:${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - run: python --version
       - run: pip install -r requirements.txt
       - run: |
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     container: pypy:${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - run: pypy --version
       - run: pip install -r requirements.txt
       - run: |