diff --git a/.github/workflows/0-welcome.yml b/.github/workflows/0-welcome.yml
index 6ad78fa..3cb9d86 100644
--- a/.github/workflows/0-welcome.yml
+++ b/.github/workflows/0-welcome.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
@@ -50,7 +50,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit README.md.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.
 
diff --git a/.github/workflows/1-create-a-branch.yml b/.github/workflows/1-create-a-branch.yml
index ab3fa23..ffcf5f3 100644
--- a/.github/workflows/1-create-a-branch.yml
+++ b/.github/workflows/1-create-a-branch.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
@@ -52,7 +52,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit the README.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.
 
diff --git a/.github/workflows/2-commit-a-file.yml b/.github/workflows/2-commit-a-file.yml
index 4805203..c4d219a 100644
--- a/.github/workflows/2-commit-a-file.yml
+++ b/.github/workflows/2-commit-a-file.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
@@ -50,7 +50,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit the README.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.
 
diff --git a/.github/workflows/3-open-a-pull-request.yml b/.github/workflows/3-open-a-pull-request.yml
index 3ce6bdf..f3f0a40 100644
--- a/.github/workflows/3-open-a-pull-request.yml
+++ b/.github/workflows/3-open-a-pull-request.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
@@ -53,7 +53,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit the README.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.
           ref: my-first-branch # Important, as normally `pull_request` event won't grab other branches.
diff --git a/.github/workflows/4-merge-your-pull-request.yml b/.github/workflows/4-merge-your-pull-request.yml
index 4f91bf0..47b856c 100644
--- a/.github/workflows/4-merge-your-pull-request.yml
+++ b/.github/workflows/4-merge-your-pull-request.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
@@ -50,7 +50,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit the README.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.