diff --git a/.github/workflows/build_demo.yml b/.github/workflows/build_demo.yml
index 91aeedb..98d3441 100644
--- a/.github/workflows/build_demo.yml
+++ b/.github/workflows/build_demo.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
   
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set image tag
         run: |
diff --git a/.github/workflows/build_deploy_staging.yml b/.github/workflows/build_deploy_staging.yml
index bc1a945..f74725e 100644
--- a/.github/workflows/build_deploy_staging.yml
+++ b/.github/workflows/build_deploy_staging.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set variables
         run: |
diff --git a/.github/workflows/remove_st_after_pr.yml b/.github/workflows/remove_st_after_pr.yml
index 4faa901..55b067a 100644
--- a/.github/workflows/remove_st_after_pr.yml
+++ b/.github/workflows/remove_st_after_pr.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Get pull request reference number
         run: |
diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 7dfc387..945ef40 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -21,7 +21,7 @@ jobs:
     continue-on-error: ${{ endsWith(matrix.ruby, 'head') || matrix.ruby == 'debug' }}
     steps:
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}