diff --git a/.github/workflows/check_md_links.yml b/.github/workflows/check_md_links.yml
index 1d018699..60f3b141 100644
--- a/.github/workflows/check_md_links.yml
+++ b/.github/workflows/check_md_links.yml
@@ -6,5 +6,5 @@ jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
diff --git a/.github/workflows/publishdocs.yaml b/.github/workflows/publishdocs.yaml
index 0e0d906c..5586266f 100644
--- a/.github/workflows/publishdocs.yaml
+++ b/.github/workflows/publishdocs.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout master
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master
diff --git a/.github/workflows/test_and_coverage.yml b/.github/workflows/test_and_coverage.yml
index f41d75ad..63e397a4 100644
--- a/.github/workflows/test_and_coverage.yml
+++ b/.github/workflows/test_and_coverage.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
 
     - name: Clone repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v4
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 20e4b1dd..46c7a3a8 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -20,7 +20,7 @@ jobs:
           node-version: "12.x"
 
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Checks that our JSON are valid
       - name: Check for syntax errors