diff --git a/.github/workflows/autoprefixer.yml b/.github/workflows/autoprefixer.yml
index 74a0c67..28bb8a6 100644
--- a/.github/workflows/autoprefixer.yml
+++ b/.github/workflows/autoprefixer.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout to latest commit
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.0.0
 
       - name: Setup Node
         uses: actions/setup-node@v3
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 51c2c8e..b1943d0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # checkout to the commit that has been pushed
-    - uses: actions/checkout@v3.6.0
+    - uses: actions/checkout@v4.0.0
       with:
         submodules: true  # Fetch Hugo themes (true OR recursive)
         fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 1b0fcb6..df982b6 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -39,7 +39,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4.0.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/md-link-checker.yml b/.github/workflows/md-link-checker.yml
index 22a367d..2435abf 100644
--- a/.github/workflows/md-link-checker.yml
+++ b/.github/workflows/md-link-checker.yml
@@ -8,6 +8,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # checkout to latest commit
-    - uses: actions/checkout@v3.6.0
+    - uses: actions/checkout@v4.0.0
     # run markdown linter
     - uses: gaurav-nelson/github-action-markdown-link-check@1.0.15