diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6f5d9b5e..8dd51365 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,7 +25,7 @@ jobs:
     name: Node.js ${{ matrix.node-version }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Configure Node.js
         uses: actions/setup-node@v6
@@ -51,7 +51,7 @@ jobs:
     name: GitHub Pages
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Configure Node.js
         uses: actions/setup-node@v6
diff --git a/.github/workflows/codeql.yaml b/.github/workflows/codeql.yaml
index e9af7aa1..82b6d541 100644
--- a/.github/workflows/codeql.yaml
+++ b/.github/workflows/codeql.yaml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         continue-on-error: true
         with:
           ref: ${{ github.sha }}
diff --git a/.github/workflows/deploy-github-pages.yaml b/.github/workflows/deploy-github-pages.yaml
index 20c626a8..ff6531e5 100644
--- a/.github/workflows/deploy-github-pages.yaml
+++ b/.github/workflows/deploy-github-pages.yaml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/format.yaml b/.github/workflows/format.yaml
index 930dc1b5..59106d11 100644
--- a/.github/workflows/format.yaml
+++ b/.github/workflows/format.yaml
@@ -17,6 +17,6 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 # v20
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - run: nix flake check
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 8e539294..7451941e 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0