diff --git a/.github/workflows/00-basic.yml b/.github/workflows/00-basic.yml
index 6beb644..46f9a72 100644
--- a/.github/workflows/00-basic.yml
+++ b/.github/workflows/00-basic.yml
@@ -15,7 +15,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       # Runs a single command using the runners shell
       - name: Run a one-line script
diff --git a/.github/workflows/00a-basic-filters.yml b/.github/workflows/00a-basic-filters.yml
index 640e1eb..64e52c0 100644
--- a/.github/workflows/00a-basic-filters.yml
+++ b/.github/workflows/00a-basic-filters.yml
@@ -36,7 +36,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       # Runs a single command using the runners shell
       - name: Run a one-line script
diff --git a/.github/workflows/03-steps.yml b/.github/workflows/03-steps.yml
index f4f5499..32e6f94 100644
--- a/.github/workflows/03-steps.yml
+++ b/.github/workflows/03-steps.yml
@@ -50,10 +50,10 @@ jobs:
         shell: perl {0}
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       # Reference a specific commit
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       # Reference the major version of a release
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       # Reference a specific version
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       # Reference a branch
       - uses: actions/checkout@main
diff --git a/.github/workflows/04-environment-variables.yaml b/.github/workflows/04-environment-variables.yaml
index b0a332e..bfa7246 100644
--- a/.github/workflows/04-environment-variables.yaml
+++ b/.github/workflows/04-environment-variables.yaml
@@ -27,7 +27,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       # Runs a single command using the runners shell
       - name: Run a one-line script
diff --git a/.github/workflows/04-environment-variables2.yaml b/.github/workflows/04-environment-variables2.yaml
index e3cc209..81646fb 100644
--- a/.github/workflows/04-environment-variables2.yaml
+++ b/.github/workflows/04-environment-variables2.yaml
@@ -29,7 +29,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       # Runs a single command using the runners shell
       - name: Run a one-line script
diff --git a/.github/workflows/05-conditionals.yml b/.github/workflows/05-conditionals.yml
index 26865f4..37939fc 100644
--- a/.github/workflows/05-conditionals.yml
+++ b/.github/workflows/05-conditionals.yml
@@ -27,7 +27,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       - name: Run Hello
         run: echo "$Greeting, $Name!"
diff --git a/.github/workflows/08-secrets.yml b/.github/workflows/08-secrets.yml
index 01c81f4..64d34d2 100644
--- a/.github/workflows/08-secrets.yml
+++ b/.github/workflows/08-secrets.yml
@@ -26,7 +26,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       # Runs a single command using the runners shell
       - name: Pass via Context
diff --git a/.github/workflows/09-node.js-matrix.yml b/.github/workflows/09-node.js-matrix.yml
index 9620fec..014983b 100644
--- a/.github/workflows/09-node.js-matrix.yml
+++ b/.github/workflows/09-node.js-matrix.yml
@@ -26,7 +26,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
diff --git a/.github/workflows/10-dotnet.yml b/.github/workflows/10-dotnet.yml
index 075145a..d049112 100644
--- a/.github/workflows/10-dotnet.yml
+++ b/.github/workflows/10-dotnet.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - name: Setup .NET
         uses: actions/setup-dotnet@v3
         with:
diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index a8cb8d3..8c80534 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 8b52047..083945f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     name: Lint code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
 
       - name: Lint code
         run: |
diff --git a/.github/workflows/marp-pages.yml b/.github/workflows/marp-pages.yml
index 3bc7495..02864aa 100644
--- a/.github/workflows/marp-pages.yml
+++ b/.github/workflows/marp-pages.yml
@@ -25,7 +25,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - name: Copy images
         run: mkdir build && cp -R slides/img build/img && cp -R slides/themes build/themes
 
diff --git a/.github/workflows/pr-validation.yml b/.github/workflows/pr-validation.yml
index 06d06ce..f04d3dc 100644
--- a/.github/workflows/pr-validation.yml
+++ b/.github/workflows/pr-validation.yml
@@ -18,7 +18,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.1.1
       - uses: azure/login@v1
         name: Sign in to Azure
         with:
diff --git a/.github/workflows/super-linter.yml b/.github/workflows/super-linter.yml
index 9e14997..c854768 100644
--- a/.github/workflows/super-linter.yml
+++ b/.github/workflows/super-linter.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.1.1
         with:
           # Full git history is needed to get a proper list of changed files within `super-linter`
           fetch-depth: 0