diff --git a/.github/workflows/ci-linux.yml b/.github/workflows/ci-linux.yml
index 5b1fbba..ed5580e 100644
--- a/.github/workflows/ci-linux.yml
+++ b/.github/workflows/ci-linux.yml
@@ -17,7 +17,7 @@ jobs:
       image: swift:${{ matrix.swift }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       
       - name: Test
         run: swift test -c release --enable-xctest --parallel --xunit-output .build/xUnit-output.xml
diff --git a/.github/workflows/ci-macos.yml b/.github/workflows/ci-macos.yml
index bad7cea..0a05146 100644
--- a/.github/workflows/ci-macos.yml
+++ b/.github/workflows/ci-macos.yml
@@ -15,7 +15,7 @@ jobs:
         xcode: ["14.3.1", "15.4", "16.0"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Select Xcode ${{ matrix.xcode }}
         run: sudo xcode-select -s '/Applications/Xcode_${{ matrix.xcode }}.app'
diff --git a/.github/workflows/ci-windows.yml b/.github/workflows/ci-windows.yml
index fe2cde7..d0714be 100644
--- a/.github/workflows/ci-windows.yml
+++ b/.github/workflows/ci-windows.yml
@@ -18,7 +18,7 @@ jobs:
           tag: 5.10-RELEASE
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Test
         run: swift test -c release --parallel --xunit-output .build/xUnit-output.xml