diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
index c2ef808..16704a6 100644
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@@ -27,6 +27,6 @@ jobs:
     name: cargo audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: taiki-e/install-action@cargo-audit
       - run: cargo audit
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9bd25a2..4498f6c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
         # three OSes.
         shell: bash
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install Rust (stable)
         uses: dtolnay/rust-toolchain@stable
@@ -144,7 +144,7 @@ jobs:
       run:
         working-directory: docs
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: oven-sh/setup-bun@v2
       - name: bun install
         run: bun install --frozen-lockfile
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 71d79c6..958bab2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -73,7 +73,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - name: cargo publish dicom-map
         env:
@@ -92,7 +92,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - name: Wait for crates.io index
         run: sleep 30
@@ -113,7 +113,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - name: Wait for crates.io index
         run: sleep 30
@@ -148,7 +148,7 @@ jobs:
             target: x64
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v6
         with:
           python-version: "3.11"
@@ -169,7 +169,7 @@ jobs:
     name: Build sdist
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with: