diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 737a174a..b8c1b290 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,7 +25,7 @@ jobs:
       matrix:
         python-version: ['3.8', '3.9', '3.10']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: set up conda environment
         uses: mamba-org/setup-micromamba@v1
         with:
diff --git a/.github/workflows/pypi-release.yaml b/.github/workflows/pypi-release.yaml
index 00011317..487f8389 100644
--- a/.github/workflows/pypi-release.yaml
+++ b/.github/workflows/pypi-release.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'xarray-contrib/xwrf'
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4
diff --git a/.github/workflows/upstream-dev-ci.yaml b/.github/workflows/upstream-dev-ci.yaml
index 1f415f3b..daef8673 100644
--- a/.github/workflows/upstream-dev-ci.yaml
+++ b/.github/workflows/upstream-dev-ci.yaml
@@ -24,7 +24,7 @@ jobs:
       matrix:
         python-version: ['3.10']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: set up conda environment
         id: conda
         uses: mamba-org/setup-micromamba@v1