diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 85dbd73..64f64e8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         xcode: ['26.0']
         config: ['debug', 'release']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Select Xcode ${{ matrix.xcode }}
         run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
       - name: Print Swift version
@@ -43,7 +43,7 @@ jobs:
         xcode: ['26.0']
         config: ['debug', 'release']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Select Xcode ${{ matrix.xcode }}
         run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
       - name: Print Swift version
@@ -64,7 +64,7 @@ jobs:
     runs-on: ubuntu-latest
     container: swift:6.2
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Cache Swift packages
         uses: actions/cache@v4
         with:
@@ -80,7 +80,7 @@ jobs:
     name: README Code Examples
     runs-on: macos-26
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode_26.0.app
       - name: Run README verification tests
diff --git a/.github/workflows/swift-format.yml b/.github/workflows/swift-format.yml
index ada5880..f2ca7e9 100644
--- a/.github/workflows/swift-format.yml
+++ b/.github/workflows/swift-format.yml
@@ -17,7 +17,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Cache swift-format
         id: cache-swift-format
diff --git a/.github/workflows/swiftlint.yml b/.github/workflows/swiftlint.yml
index ca6319f..e43c4e5 100644
--- a/.github/workflows/swiftlint.yml
+++ b/.github/workflows/swiftlint.yml
@@ -7,7 +7,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: SwiftLint
         run: swiftlint lint
         continue-on-error: true