diff --git a/.github/workflows/conventional-pr.yml b/.github/workflows/conventional-pr.yml
index 3e73449a..3dde3e67 100644
--- a/.github/workflows/conventional-pr.yml
+++ b/.github/workflows/conventional-pr.yml
@@ -12,7 +12,7 @@ jobs:
   lint-pr:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: CondeNast/conventional-pull-request-action@v0.2.0
         with:
           commitTitleMatch: false
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 748a51d6..423338ce 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -19,7 +19,7 @@ jobs:
       CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
       CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - uses: jdx/mise-action@v2
         with:
           experimental: true
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index e60b1169..922c96b1 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: 'ubuntu-latest'
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: jdx/mise-action@v2
       - name: Install dependencies
         run: mise run install
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 38f177ee..43410482 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,7 @@ jobs:
     timeout-minutes: 15
     if: "!startsWith(github.event.head_commit.message, '[Release]')"
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0
       - uses: jdx/mise-action@v2
diff --git a/.github/workflows/rosalind.yml b/.github/workflows/rosalind.yml
index 257adcbd..61f0aba7 100644
--- a/.github/workflows/rosalind.yml
+++ b/.github/workflows/rosalind.yml
@@ -24,7 +24,7 @@ jobs:
         swift: ["6.0"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: SwiftyLab/setup-swift@latest
         with:
           swift-version: ${{ matrix.swift }}
@@ -48,7 +48,7 @@ jobs:
         swift: ["6.0"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Select Xcode
         run: sudo xcode-select -switch /Applications/Xcode_$(cat .xcode-version).app
       - uses: SwiftyLab/setup-swift@latest
@@ -70,7 +70,7 @@ jobs:
     timeout-minutes: 10
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: jdx/mise-action@v2
         with:
           experimental: true