diff --git a/.github/workflows/compilation-checks.yml b/.github/workflows/compilation-checks.yml
index de96211de..177d6b6d4 100644
--- a/.github/workflows/compilation-checks.yml
+++ b/.github/workflows/compilation-checks.yml
@@ -31,7 +31,7 @@ jobs:
         arch: [ARM, ARM_HYP, AARCH64, RISCV64, X64]
         compiler: [gcc, llvm]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: seL4/ci-actions/standalone-kernel@master
       with:
         ARCH: ${{ matrix.arch }}
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index f5577914e..aea2c77eb 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -27,7 +27,7 @@ jobs:
       matrix:
         rust: [stable, nightly]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@master
@@ -77,7 +77,7 @@ jobs:
     name: Security Audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/sel4test-deploy.yml b/.github/workflows/sel4test-deploy.yml
index ad6be83b1..d051afc08 100644
--- a/.github/workflows/sel4test-deploy.yml
+++ b/.github/workflows/sel4test-deploy.yml
@@ -91,7 +91,7 @@ jobs:
     concurrency: hw-run-${{ strategy.job-index }}
     steps:
       - name: Get machine queue
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: seL4/machine_queue
           path: machine_queue
diff --git a/.github/workflows/xml_lint.yml b/.github/workflows/xml_lint.yml
index 769e570dd..180e195d4 100644
--- a/.github/workflows/xml_lint.yml
+++ b/.github/workflows/xml_lint.yml
@@ -32,7 +32,7 @@ jobs:
       run: sudo apt-get update
     - name: install xmllint
       run: sudo apt-get install libxml2-utils
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: run xmllint
       run: |
         find libsel4 -name "object-api*.xml" | \