diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6645c45..7cd95e1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     name: macOS (Swift 6.2, debug)
     runs-on: macos-26
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Select Xcode 26.0
         run: sudo xcode-select -s /Applications/Xcode_26.0.app
@@ -63,7 +63,7 @@ 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
@@ -83,7 +83,7 @@ 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
diff --git a/.github/workflows/swift-format.yml b/.github/workflows/swift-format.yml
index 8af6277..fd56273 100644
--- a/.github/workflows/swift-format.yml
+++ b/.github/workflows/swift-format.yml
@@ -13,7 +13,7 @@ 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 999c844..db8e5f2 100644
--- a/.github/workflows/swiftlint.yml
+++ b/.github/workflows/swiftlint.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     container: swift:6.2
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Restore swiftlint cache
         id: cache-swiftlint-restore