diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 16154bc35..1d39f14b8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,7 +7,7 @@ jobs:
     name: Check (1.63.0)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@1.63.0
       - run: cp ci/compat-Cargo.lock ./Cargo.lock
       - run: cargo check --verbose --locked
@@ -20,7 +20,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         rust: [stable, beta, nightly]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -38,7 +38,7 @@ jobs:
       matrix:
         rust: [stable, nightly]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -53,7 +53,7 @@ jobs:
       - run: |
           sudo apt-get update
           sudo apt-get install gcc-multilib
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable-i686-unknown-linux-gnu
@@ -76,7 +76,7 @@ jobs:
     env:
       RUSTFLAGS: ${{ matrix.rustflags }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.toolchain }}
@@ -90,7 +90,7 @@ jobs:
     env:
       CARGO_TARGET_WASM32_WASI_RUNNER: /home/runner/.wasmtime/bin/wasmtime
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: wasm32-wasi
@@ -103,7 +103,7 @@ jobs:
     name: Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@1.72.1
         with:
           components: rustfmt
diff --git a/.github/workflows/master.yaml b/.github/workflows/master.yaml
index 75db74108..b54911796 100644
--- a/.github/workflows/master.yaml
+++ b/.github/workflows/master.yaml
@@ -12,7 +12,7 @@ jobs:
     name: Test (stable)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         with:
           toolchain: stable
diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 5d165324f..b51c7aac1 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -11,7 +11,7 @@ jobs:
     name: Check (1.63.0)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@1.63.0
       - run: cp ci/compat-Cargo.lock ./Cargo.lock
       - run: cargo check --verbose --locked
@@ -20,7 +20,7 @@ jobs:
     name: Test (stable)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - run: cargo build --verbose
       - run: cargo test --verbose --package rayon
@@ -31,7 +31,7 @@ jobs:
     name: Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@1.72.1
         with:
           components: rustfmt