diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index eb71c5c..f68d343 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out source repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 #full history
       - name: Set up Python
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 2846bad..c00d082 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out source repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/publish_gh_pages.yml b/.github/workflows/publish_gh_pages.yml
index f4a35b7..5d99b5c 100644
--- a/.github/workflows/publish_gh_pages.yml
+++ b/.github/workflows/publish_gh_pages.yml
@@ -23,7 +23,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Configure Pages
         uses: actions/configure-pages@v5
       - name: Install Node.js