diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index cb57c5f4..d78c12e8 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -8,7 +8,7 @@ jobs:
   benchmark:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: rustup toolchain update nightly && rustup default nightly
       - uses: Swatinem/rust-cache@v2
       - name: run benchmark
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 612dcbb2..8d7c8083 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     name: Basic sanity checks
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
@@ -34,7 +34,7 @@ jobs:
         toolchain: [ stable, nightly ]
         use_std: [ y, n ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         name: thumbv6m-none-eabi toolchain setup
         if: ${{ matrix.use_std == 'y' }}
@@ -71,7 +71,7 @@ jobs:
         toolchain: [ stable, nightly ]
         use_std: [ y, n ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         name: thumbv6m-none-eabi toolchain setup
         if: ${{ matrix.use_std == 'y' }}
@@ -113,7 +113,7 @@ jobs:
       matrix:
         toolchain: [ stable, nightly ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -133,7 +133,7 @@ jobs:
       matrix:
         toolchain: [ stable, nightly ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
diff --git a/.github/workflows/rustdoc.yml b/.github/workflows/rustdoc.yml
index d72d70ba..2fb87ea7 100644
--- a/.github/workflows/rustdoc.yml
+++ b/.github/workflows/rustdoc.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
 
       - uses: actions-rs/toolchain@v1
         with: