diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5d56e054ec3..c1eb07eed32 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,7 +51,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # https://github.com/actions/setup-node
       - name: Install Node.js ${{ matrix.node-version }}
@@ -316,7 +316,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # Download artifacts from previous 'tests' job
       - name: Download coverage artifacts
diff --git a/.github/workflows/codescan.yml b/.github/workflows/codescan.yml
index ce569e980af..0181d7f629b 100644
--- a/.github/workflows/codescan.yml
+++ b/.github/workflows/codescan.yml
@@ -35,7 +35,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # Initializes the CodeQL tools for scanning.
       # https://github.com/github/codeql-action
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 78d1462a41b..7a071dd62a3 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -77,7 +77,7 @@ jobs:
     steps:
       # Checkout our codebase (to get access to Docker Compose scripts)
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       # Download Docker image artifacts (which were just built by reusable-docker-build.yml)
       - name: Download Docker image artifacts
         uses: actions/download-artifact@v8
diff --git a/.github/workflows/port_merged_pull_request.yml b/.github/workflows/port_merged_pull_request.yml
index ea45e62869c..3f81c5aa572 100644
--- a/.github/workflows/port_merged_pull_request.yml
+++ b/.github/workflows/port_merged_pull_request.yml
@@ -23,7 +23,7 @@ jobs:
     if: github.event.pull_request.merged
     steps:
       # Checkout code
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       # Port PR to other branch (ONLY if labeled with "port to")
       # See https://github.com/korthout/backport-action
       - name: Create backport pull requests