diff --git a/.github/workflows/check-docker.yml b/.github/workflows/check-docker.yml
index 80bec51..f285555 100644
--- a/.github/workflows/check-docker.yml
+++ b/.github/workflows/check-docker.yml
@@ -8,7 +8,7 @@ jobs:
     steps:
 
       - name: Checkout this repository
-        uses: actions/checkout@master
+        uses: actions/checkout@v4.1.4
 
       - name: "Check if Dockerfile exist first"
         id: check_files
diff --git a/.github/workflows/check-links.yml b/.github/workflows/check-links.yml
index 49c04c5..f3f1a83 100644
--- a/.github/workflows/check-links.yml
+++ b/.github/workflows/check-links.yml
@@ -8,7 +8,7 @@ jobs:
     steps:
 
       - name: Checkout this repository
-        uses: actions/checkout@master
+        uses: actions/checkout@v4.1.4
 
       - name: Download .markdownlint.json
         uses: suisei-cn/actions-download-file@v1.4.0
diff --git a/.github/workflows/check-markdown.yml b/.github/workflows/check-markdown.yml
index 36dbd52..8fe113a 100644
--- a/.github/workflows/check-markdown.yml
+++ b/.github/workflows/check-markdown.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout this repository
-        uses: actions/checkout@master
+        uses: actions/checkout@v4.1.4
 
       - name: Download .markdownlint.json
         uses: suisei-cn/actions-download-file@v1.4.0
diff --git a/.github/workflows/check-yaml.yml b/.github/workflows/check-yaml.yml
index 340b271..2dee616 100644
--- a/.github/workflows/check-yaml.yml
+++ b/.github/workflows/check-yaml.yml
@@ -8,7 +8,7 @@ jobs:
     steps:
 
       - name: Checkout this repository
-        uses: actions/checkout@master
+        uses: actions/checkout@v4.1.4
 
       - name: Download .yamllint.yml
         uses: suisei-cn/actions-download-file@v1.4.0