diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fd0f617..67d5de5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -57,7 +57,7 @@ jobs:
   notebooks:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -81,7 +81,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index 6b313e0..7925341 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -27,7 +27,7 @@ jobs:
     name: Compile paper draft
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Build draft PDF
         # Pin to commit on master (2024-07-17) for supply-chain safety.
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 49d3383..f6b57fb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,7 +11,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v6