diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 63ceeef..9c18a06 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -21,7 +21,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -42,7 +42,7 @@ jobs:
           - "3.11"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Run tox
         uses: lsst-sqre/run-tox@v1
@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # full history for setuptools_scm
 
@@ -90,7 +90,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # full history for setuptools_scm
 
@@ -117,7 +117,7 @@ jobs:
     if: github.event_name == 'release' && github.event.action == 'published'
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # full history for setuptools_scm
 
diff --git a/.github/workflows/dependencies.yaml b/.github/workflows/dependencies.yaml
index 96075c9..3ea8e2e 100644
--- a/.github/workflows/dependencies.yaml
+++ b/.github/workflows/dependencies.yaml
@@ -11,7 +11,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Run neophile
         uses: lsst-sqre/run-neophile@v1
diff --git a/.github/workflows/periodic-ci.yaml b/.github/workflows/periodic-ci.yaml
index 2983d65..74fea96 100644
--- a/.github/workflows/periodic-ci.yaml
+++ b/.github/workflows/periodic-ci.yaml
@@ -19,7 +19,7 @@ jobs:
           - "3.11"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Run tests in tox
         uses: lsst-sqre/run-tox@v1
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build docs in tox
         uses: lsst-sqre/run-tox@v1
@@ -46,7 +46,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # full history for setuptools_scm