diff --git a/.github/workflows/base.yml b/.github/workflows/base.yml
index e50be70..1e40775 100644
--- a/.github/workflows/base.yml
+++ b/.github/workflows/base.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - run: git config --global --add safe.directory $(realpath .)
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 0425a03..46f67e5 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -10,7 +10,7 @@ jobs:
   docker-build-publish-image:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
diff --git a/.github/workflows/templates/base.yml b/.github/workflows/templates/base.yml
index d3c5422..a29d3ac 100644
--- a/.github/workflows/templates/base.yml
+++ b/.github/workflows/templates/base.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
diff --git a/.github/workflows/templates/c.yaml b/.github/workflows/templates/c.yaml
index 6ca41e6..a62798c 100644
--- a/.github/workflows/templates/c.yaml
+++ b/.github/workflows/templates/c.yaml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         platform: ["qemu-aarch64-virt", "qemu-riscv64-virt"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - run: make PLATFORM=${{ matrix.platform }}
@@ -27,7 +27,7 @@ jobs:
       matrix:
         platform: ["qemu-aarch64-virt", "qemu-riscv64-virt"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - run: make PLATFORM=${{ matrix.platform }} format-check
@@ -39,7 +39,7 @@ jobs:
       matrix:
         platform: ["qemu-aarch64-virt", "qemu-riscv64-virt"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - run: make PLATFORM=${{ matrix.platform }} tidy
@@ -52,7 +52,7 @@ jobs:
       matrix:
         platform: ["qemu-aarch64-virt", "qemu-riscv64-virt"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - run: make PLATFORM=${{ matrix.platform }} misra-check
diff --git a/.github/workflows/templates/misc.yaml b/.github/workflows/templates/misc.yaml
index da8e18f..a69051b 100644
--- a/.github/workflows/templates/misc.yaml
+++ b/.github/workflows/templates/misc.yaml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           fetch-depth: 0
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
diff --git a/README.md b/README.md
index de5a1c5..9e1c43b 100644
--- a/README.md
+++ b/README.md
@@ -159,7 +159,7 @@ jobs:
     runs-on: ubuntu-latest
     container: baoproject/bao:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - run: make <example-ci-check-target>