diff --git a/.github/workflows/api-breakage.yml b/.github/workflows/api-breakage.yml
index 36caaab..40d3d6b 100644
--- a/.github/workflows/api-breakage.yml
+++ b/.github/workflows/api-breakage.yml
@@ -14,7 +14,7 @@ jobs:
       image: swift:latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0
     # https://github.com/actions/checkout/issues/766
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index baf079e..d2b97ac 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
 #    runs-on: macOS-13
 #    steps:
 #    - name: Checkout
-#      uses: actions/checkout@v5
+#      uses: actions/checkout@v6
 #    - name: SPM tests
 #      run: swift test --enable-code-coverage
 #    - name: Convert coverage files
@@ -74,7 +74,7 @@ jobs:
           POSTGRES_INITDB_ARGS: --auth-host=${{ matrix.postgres-auth }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Test
       run: |
         swift test --enable-code-coverage
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 522249d..710719c 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -15,7 +15,7 @@ jobs:
       image: swiftlang/swift:${{ matrix.image }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Test
       run: |
         swift test
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 25fa26e..4f05451 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 15
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 1
     - name: run script
diff --git a/.github/workflows/verify-documentation.yml b/.github/workflows/verify-documentation.yml
index 8b66be8..fb65357 100644
--- a/.github/workflows/verify-documentation.yml
+++ b/.github/workflows/verify-documentation.yml
@@ -17,12 +17,12 @@ jobs:
       run: |
         apt-get update && apt-get install -y rsync bc
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0
         path: "package"
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: "hummingbird-project/hummingbird-docs"
         fetch-depth: 0