diff --git a/.github/workflows/base.yml b/.github/workflows/base.yml
index 2d97c33a..6a77bd81 100644
--- a/.github/workflows/base.yml
+++ b/.github/workflows/base.yml
@@ -8,7 +8,7 @@ jobs:
     name: cargo test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - uses: taiki-e/install-action@v2
       with: { tool: cargo-nextest }
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index c35a8b9c..28a124b6 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -8,7 +8,7 @@ jobs:
     name: codecov
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - uses: taiki-e/install-action@v2
       with: { tool: cargo-tarpaulin }
diff --git a/.github/workflows/deny.yml b/.github/workflows/deny.yml
index 858c211d..b85d2c5f 100644
--- a/.github/workflows/deny.yml
+++ b/.github/workflows/deny.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: EmbarkStudios/cargo-deny-action@v2
       with:
         command: check advisories
@@ -18,7 +18,7 @@ jobs:
     name: cargo deny bans licenses sources
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Ignore dev-dependencies
       run: sed -i 's/\[dev-dependencies\]/[workaround-avoid-dev-deps]/g' Cargo.toml
     - uses: EmbarkStudios/cargo-deny-action@v2
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index a28c2b1d..77241b67 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -10,7 +10,7 @@ jobs:
     env:
       RUSTDOCFLAGS: '--cfg=docsrs -Dwarnings'
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: nightly
diff --git a/.github/workflows/exhaustive.yml b/.github/workflows/exhaustive.yml
index ac6350aa..015f5857 100644
--- a/.github/workflows/exhaustive.yml
+++ b/.github/workflows/exhaustive.yml
@@ -16,7 +16,7 @@ jobs:
         - { toolchain: stable, target: x86_64-unknown-linux-gnu, os: ubuntu-latest }
     runs-on: ${{ matrix.platform.os }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: ${{ matrix.platform.toolchain }}
@@ -30,7 +30,7 @@ jobs:
     name: cargo test --shallow-minimal-versions
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with: { toolchain: nightly }
     - name: Update to shallow minimal versions
@@ -59,7 +59,7 @@ jobs:
     name: cargo test minimal-versions
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with: { toolchain: nightly }
     - name: Update to minimal versions
@@ -81,7 +81,7 @@ jobs:
     env:
       RUSTFLAGS: -Dwarnings
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - uses: taiki-e/install-action@v2
       with:
@@ -97,7 +97,7 @@ jobs:
     env:
       RUSTFLAGS: -Dwarnings
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - uses: taiki-e/install-action@v2
       with:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 00aef71a..e6ba510f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     name: cargo fmt --check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with: { components: rustfmt }
     - run: cargo fmt --all -- --check
@@ -17,7 +17,7 @@ jobs:
     name: cargo clippy
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with: { components: clippy }
     - run: cargo --locked clippy --no-deps --all --all-targets --all-features -- -D warnings
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 3094248e..e2eaaffd 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -8,7 +8,7 @@ jobs:
     name: cargo +nightly test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: nightly
@@ -21,7 +21,7 @@ jobs:
     name: cargo +nightly fmt --check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: nightly
@@ -32,7 +32,7 @@ jobs:
     name: cargo +nightly clippy
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: nightly
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7cf6c0d1..422061f7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/wasi.yml b/.github/workflows/wasi.yml
index f9d27e1c..3b933ba9 100644
--- a/.github/workflows/wasi.yml
+++ b/.github/workflows/wasi.yml
@@ -8,7 +8,7 @@ jobs:
     name: Build for wasm32-wasip1-threads
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: nightly