diff --git a/.github/workflows/0-welcome.yml b/.github/workflows/0-welcome.yml
index fe4e987..1ee7739 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 b424308..5dd9cbe 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 30c8322..bfa74d8 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 f76c0c6..23c636c 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)" >> $GITHUB_OUTPUT
@@ -53,7 +53,7 @@ jobs:
     steps:
       # We'll need to check out the repository so that we can edit the README.
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Let's get all the branches.
           ref: my-first-branch # Important, as normally `pull_request` event won't grab other branches.
diff --git a/.github/workflows/4-merge-your-pull-request.yml b/.github/workflows/4-merge-your-pull-request.yml
index b7401a0..ae2e4bc 100644
--- a/.github/workflows/4-merge-your-pull-request.yml
+++ b/.github/workflows/4-merge-your-pull-request.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - id: get_step
         run: |
           echo "current_step=$(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.