diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 147e5ced..51b4a85b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -21,7 +21,7 @@ jobs:
     outputs:
       triggered: ${{ steps.detect-trigger.outputs.trigger-found }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 2
       - uses: xarray-contrib/ci-trigger@v1
@@ -43,7 +43,7 @@ jobs:
         os: ["ubuntu-latest"]
         python-version: ["3.8", "3.9", "3.10"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/setup-micromamba@v1.4.3
         with:
@@ -78,7 +78,7 @@ jobs:
       run:
         shell: bash -l {0}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/provision-with-micromamba@main
         with:
@@ -124,7 +124,7 @@ jobs:
       run:
         shell: bash -l {0}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Create conda environment
         uses: mamba-org/provision-with-micromamba@main
         with:
diff --git a/.github/workflows/full_archive_ci.yaml b/.github/workflows/full_archive_ci.yaml
index a5399df1..58ecc42b 100644
--- a/.github/workflows/full_archive_ci.yaml
+++ b/.github/workflows/full_archive_ci.yaml
@@ -20,7 +20,7 @@ jobs:
         catalog: ['main']
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Cache conda
       uses: actions/cache@v3
       env:
diff --git a/.github/workflows/pythonpublish.yaml b/.github/workflows/pythonpublish.yaml
index a102d78c..9a596a42 100644
--- a/.github/workflows/pythonpublish.yaml
+++ b/.github/workflows/pythonpublish.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'jbusecke/xmip'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4