diff --git a/.github/workflows/delete-preview.yml b/.github/workflows/delete-preview.yml
index afd658af..faa83ccd 100644
--- a/.github/workflows/delete-preview.yml
+++ b/.github/workflows/delete-preview.yml
@@ -18,7 +18,7 @@ jobs:
 
       # Check out current repository
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/docker-build.yml b/.github/workflows/docker-build.yml
index 77491cb8..4a169645 100644
--- a/.github/workflows/docker-build.yml
+++ b/.github/workflows/docker-build.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Login as jhudsl-robot
         run: |
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 9316682a..3eaa0ca5 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -91,7 +91,7 @@ jobs:
 
     steps:
       - name: Checkout files
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -117,7 +117,7 @@ jobs:
 
     steps:
       - name: Checkout files
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/render-all.yml b/.github/workflows/render-all.yml
index b9b19728..7810e387 100644
--- a/.github/workflows/render-all.yml
+++ b/.github/workflows/render-all.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
         # Use the yaml-env-action action.
       - name: Load environment from YAML
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_PAT }}
@@ -96,7 +96,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_PAT }}
@@ -135,7 +135,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_PAT }}
@@ -211,7 +211,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_PAT }}
diff --git a/.github/workflows/send-updates.yml b/.github/workflows/send-updates.yml
index 3fda2330..07a0cd99 100644
--- a/.github/workflows/send-updates.yml
+++ b/.github/workflows/send-updates.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Login as jhudsl-robot
         run: |
diff --git a/.github/workflows/starting-course.yml b/.github/workflows/starting-course.yml
index 5ded0b20..053c3750 100644
--- a/.github/workflows/starting-course.yml
+++ b/.github/workflows/starting-course.yml
@@ -16,7 +16,7 @@ jobs:
     if: github.event.repository.name != 'OTTR_Template'
     steps:
       - name: checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Login as jhudsl-robot
         run: |
diff --git a/.github/workflows/transfer-rendered-files.yml b/.github/workflows/transfer-rendered-files.yml
index 3c3577ee..e698d987 100644
--- a/.github/workflows/transfer-rendered-files.yml
+++ b/.github/workflows/transfer-rendered-files.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
         # Use the yaml-env-action action.
       - name: Load environment from YAML
@@ -65,7 +65,7 @@ jobs:
 
       - name: Checkout code from Leanpub repo
         if: ${{ steps.git_repo_check.outputs.git_results == 'TRUE' }}
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: ${{ steps.git_repo_check.outputs.leanpub_repo }}
           token: ${{ secrets.GH_PAT }}