diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 5093472..336dd2e 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -22,7 +22,7 @@ jobs:
           - 1.70.0
           - nightly
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -39,7 +39,7 @@ jobs:
           - --features=serialize
           - --features=unstable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install stable toolchain
         uses: dtolnay/rust-toolchain@stable
       - run: cargo test --locked ${{ matrix.features }}
@@ -48,7 +48,7 @@ jobs:
     name: no-std
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
       - run: RUSTFLAGS="-D warnings" cargo check --locked --no-default-features
 
@@ -56,7 +56,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt
@@ -66,7 +66,7 @@ jobs:
     name: Clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: clippy
@@ -78,7 +78,7 @@ jobs:
     env:
       RUSTDOCFLAGS: --cfg docsrs
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@nightly
       - run: cargo doc --workspace --no-deps --locked --all-features
 
@@ -87,7 +87,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Check semver
         uses: obi1kenobi/cargo-semver-checks-action@v2
 
@@ -96,7 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
diff --git a/.github/workflows/security-audit.yml b/.github/workflows/security-audit.yml
index 6fbd46e..d5ee5ae 100644
--- a/.github/workflows/security-audit.yml
+++ b/.github/workflows/security-audit.yml
@@ -9,7 +9,7 @@ jobs:
   security_audit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: rustsec/audit-check@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}