diff --git a/.github/workflows/deploy-site.yaml b/.github/workflows/deploy-site.yaml
index 60ba7fb3..938c60a3 100644
--- a/.github/workflows/deploy-site.yaml
+++ b/.github/workflows/deploy-site.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # checkout to the commit that has been pushed
-      - uses: actions/checkout@v4.1.4
+      - uses: actions/checkout@v4.1.5
 
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v3
diff --git a/.github/workflows/html-proof.yaml b/.github/workflows/html-proof.yaml
index 4f30c723..b2e4fbc5 100644
--- a/.github/workflows/html-proof.yaml
+++ b/.github/workflows/html-proof.yaml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # checkout to the commit that has been pushed
-    - uses: actions/checkout@v4.1.4
+    - uses: actions/checkout@v4.1.5
       with:
         submodules: true  # Fetch Hugo themes (true OR recursive)
         fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
diff --git a/.github/workflows/lighthouse-check.yml b/.github/workflows/lighthouse-check.yml
index ceaccade..f346e8c9 100644
--- a/.github/workflows/lighthouse-check.yml
+++ b/.github/workflows/lighthouse-check.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@v4.1.4
+    - uses: actions/checkout@v4.1.5
     - run: npm install
     # Run Lighthouse check
     - name: Run Lighthouse
diff --git a/.github/workflows/md-link-check.yaml b/.github/workflows/md-link-check.yaml
index 36df8408..11736f9b 100644
--- a/.github/workflows/md-link-check.yaml
+++ b/.github/workflows/md-link-check.yaml
@@ -6,5 +6,5 @@ jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.4
+      - uses: actions/checkout@v4.1.5
       - uses: gaurav-nelson/github-action-markdown-link-check@v1
\ No newline at end of file
diff --git a/.github/workflows/theme-update.yml b/.github/workflows/theme-update.yml
index 890c1c72..6e9e32b1 100644
--- a/.github/workflows/theme-update.yml
+++ b/.github/workflows/theme-update.yml
@@ -8,7 +8,7 @@ jobs:
   update-theme:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.4
+      - uses: actions/checkout@v4.1.5
         with:
           ref: main