diff --git a/.github/workflows/build-and-check-documentation.yml b/.github/workflows/build-and-check-documentation.yml
index 2cecc9d..43793d8 100644
--- a/.github/workflows/build-and-check-documentation.yml
+++ b/.github/workflows/build-and-check-documentation.yml
@@ -21,7 +21,7 @@ jobs:
     steps:
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check links
         uses: addnab/docker-run-action@v3
diff --git a/.github/workflows/build-and-deploy-documentation.yml b/.github/workflows/build-and-deploy-documentation.yml
index 0b2e8c7..19b84d1 100644
--- a/.github/workflows/build-and-deploy-documentation.yml
+++ b/.github/workflows/build-and-deploy-documentation.yml
@@ -25,7 +25,7 @@ jobs:
     steps:
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check links
         uses: addnab/docker-run-action@v3
diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 7a8ae0d..21dcde3 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Opendylan
         uses: dylan-lang/install-opendylan@v3